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<H2>

org.apache.tools.ant
 
Class IntrospectionHelper</H2>
<PRE>
java.lang.Object
 <IMG SRC="../../../../resources/inherit.gif" ALT="extended by ">org.apache.tools.ant.IntrospectionHelper
</PRE>
<HR>
<DL>
<DT><PRE>public final class IntrospectionHelper<DT>extends java.lang.Object</DL>
</PRE>

Helper class that collects the methods a task or nested element
 holds to set attributes, create nested elements or hold PCDATA
 elements.

It contains hashtables containing classes that use introspection
 to handle all the invocation of the project-component specific methods.

This class is somewhat complex, as it implements the O/X mapping between
 Ant XML and Java class instances. This is not the best place for someone new
 to Ant to start contributing to the codebase, as a change here can break the
 entire system in interesting ways. Always run a full test of Ant before checking
 in/submitting changes to this file.

The class is final and has a private constructor.
 To get an instance for a specific (class,project) combination,
 use <A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#getHelper(org.apache.tools.ant.Project, java.lang.Class)"><CODE>getHelper(Project,Class)</CODE></A>.
 This may return an existing version, or a new one
 ...do not make any assumptions about its uniqueness, or its validity after the Project
 instance has finished its build.

<HR>

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Nested Class Summary</TH>
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<CODE>static&nbsp;class</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.Creator.html" title="class in org.apache.tools.ant">IntrospectionHelper.Creator</A></CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;creator - allows use of create/store external
 to IntrospectionHelper.</TD>
</TR>
</TABLE>
&nbsp;

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Field Summary</TH>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>protected static&nbsp;java.lang.String</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#NOT_SUPPORTED_CHILD_POSTFIX">NOT_SUPPORTED_CHILD_POSTFIX</A></CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;part of the error message created by <A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#throwNotSupported(org.apache.tools.ant.Project, java.lang.Object, java.lang.String)"><CODE>throwNotSupported</CODE></A>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>protected static&nbsp;java.lang.String</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#NOT_SUPPORTED_CHILD_PREFIX">NOT_SUPPORTED_CHILD_PREFIX</A></CODE>

<A NAME="method_summary"></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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Method Summary</TH>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;void</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#addText(org.apache.tools.ant.Project, java.lang.Object, java.lang.String)">addText</A>(<A HREF="../../../../org/apache/tools/ant/Project.html" title="class in org.apache.tools.ant">Project</A>&nbsp;project,
 java.lang.Object&nbsp;element,
 java.lang.String&nbsp;text)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Adds PCDATA to an element, using the element's
 <code>void addText(String)</code> method, if it has one.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>static&nbsp;void</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#clearCache()">clearCache</A>()</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Clears the static cache of on build finished.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;java.lang.Object</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#createElement(org.apache.tools.ant.Project, java.lang.Object, java.lang.String)">createElement</A>(<A HREF="../../../../org/apache/tools/ant/Project.html" title="class in org.apache.tools.ant">Project</A>&nbsp;project,
 java.lang.Object&nbsp;parent,
 java.lang.String&nbsp;elementName)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deprecated.&nbsp;since 1.6.x.
 This is not a namespace aware method.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;java.lang.reflect.Method</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#getAddTextMethod()">getAddTextMethod</A>()</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the addText method when the introspected
 class supports nested text.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;java.util.Map</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#getAttributeMap()">getAttributeMap</A>()</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a read-only map of attributes supported by the introspected class.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;java.lang.reflect.Method</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#getAttributeMethod(java.lang.String)">getAttributeMethod</A>(java.lang.String&nbsp;attributeName)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the setter method of a named attribute.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;java.util.Enumeration</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#getAttributes()">getAttributes</A>()</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns an enumeration of the names of the attributes supported by the introspected class.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;java.lang.Class</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#getAttributeType(java.lang.String)">getAttributeType</A>(java.lang.String&nbsp;attributeName)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the type of a named attribute.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;<A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.Creator.html" title="class in org.apache.tools.ant">IntrospectionHelper.Creator</A></CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#getElementCreator(org.apache.tools.ant.Project, java.lang.String, java.lang.Object, java.lang.String, org.apache.tools.ant.UnknownElement)">getElementCreator</A>(<A HREF="../../../../org/apache/tools/ant/Project.html" title="class in org.apache.tools.ant">Project</A>&nbsp;project,
 java.lang.String&nbsp;parentUri,
 java.lang.Object&nbsp;parent,
 java.lang.String&nbsp;elementName,
 <A HREF="../../../../org/apache/tools/ant/UnknownElement.html" title="class in org.apache.tools.ant">UnknownElement</A>&nbsp;ue)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;returns an object that creates and stores an object
 for an element of a parent.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;java.lang.reflect.Method</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#getElementMethod(java.lang.String)">getElementMethod</A>(java.lang.String&nbsp;elementName)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the adder or creator method of a named nested element.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;java.lang.Class</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#getElementType(java.lang.String)">getElementType</A>(java.lang.String&nbsp;elementName)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the type of a named nested element.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;java.util.List</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#getExtensionPoints()">getExtensionPoints</A>()</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a read-only list of extension points supported
 by the introspected class.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>static&nbsp;<A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html" title="class in org.apache.tools.ant">IntrospectionHelper</A></CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#getHelper(java.lang.Class)">getHelper</A>(java.lang.Class&nbsp;c)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a helper for the given class, either from the cache
 or by creating a new instance.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>static&nbsp;<A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html" title="class in org.apache.tools.ant">IntrospectionHelper</A></CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#getHelper(org.apache.tools.ant.Project, java.lang.Class)">getHelper</A>(<A HREF="../../../../org/apache/tools/ant/Project.html" title="class in org.apache.tools.ant">Project</A>&nbsp;p,
 java.lang.Class&nbsp;c)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a read-only map of nested elements supported
 by the introspected class.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;java.util.Enumeration</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#getNestedElements()">getNestedElements</A>()</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns an enumeration of the names of the nested elements supported
 by the introspected class.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;boolean</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#isContainer()">isContainer</A>()</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Indicates whether the introspected class is a task container,
 supporting arbitrary nested tasks/types.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;boolean</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#isDynamic()">isDynamic</A>()</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Indicates whether the introspected class is a dynamic one,
 supporting arbitrary nested elements and/or attributes.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;void</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#setAttribute(org.apache.tools.ant.Project, java.lang.Object, java.lang.String, java.lang.Object)">setAttribute</A>(<A HREF="../../../../org/apache/tools/ant/Project.html" title="class in org.apache.tools.ant">Project</A>&nbsp;p,
 java.lang.Object&nbsp;element,
 java.lang.String&nbsp;attributeName,
 java.lang.Object&nbsp;value)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the named attribute in the given element, which is part of the
 given project.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;void</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#setAttribute(org.apache.tools.ant.Project, java.lang.Object, java.lang.String, java.lang.String)">setAttribute</A>(<A HREF="../../../../org/apache/tools/ant/Project.html" title="class in org.apache.tools.ant">Project</A>&nbsp;p,
 java.lang.Object&nbsp;element,
 java.lang.String&nbsp;attributeName,
 java.lang.String&nbsp;value)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the named attribute in the given element, which is part of the
 given project.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;void</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#storeElement(org.apache.tools.ant.Project, java.lang.Object, java.lang.Object, java.lang.String)">storeElement</A>(<A HREF="../../../../org/apache/tools/ant/Project.html" title="class in org.apache.tools.ant">Project</A>&nbsp;project,
 java.lang.Object&nbsp;parent,
 java.lang.Object&nbsp;child,
 java.lang.String&nbsp;elementName)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Stores a named nested element using a storage method determined
 by the initial introspection.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;boolean</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#supportsCharacters()">supportsCharacters</A>()</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns whether or not the introspected class supports PCDATA.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;boolean</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#supportsNestedElement(java.lang.String)">supportsNestedElement</A>(java.lang.String&nbsp;elementName)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Indicates if this element supports a nested element of the
 given name.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;boolean</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#supportsNestedElement(java.lang.String, java.lang.String)">supportsNestedElement</A>(java.lang.String&nbsp;parentUri,
 java.lang.String&nbsp;elementName)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Indicate if this element supports a nested element of the
 given name.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;boolean</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#supportsNestedElement(java.lang.String, java.lang.String, org.apache.tools.ant.Project, java.lang.Object)">supportsNestedElement</A>(java.lang.String&nbsp;parentUri,
 java.lang.String&nbsp;elementName,
 <A HREF="../../../../org/apache/tools/ant/Project.html" title="class in org.apache.tools.ant">Project</A>&nbsp;project,
 java.lang.Object&nbsp;parent)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Check if this element supports a nested element from reflection.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>&nbsp;void</CODE></TD>
<TD><CODE><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#throwNotSupported(org.apache.tools.ant.Project, java.lang.Object, java.lang.String)">throwNotSupported</A>(<A HREF="../../../../org/apache/tools/ant/Project.html" title="class in org.apache.tools.ant">Project</A>&nbsp;project,
 java.lang.Object&nbsp;parent,
 java.lang.String&nbsp;elementName)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Utility method to throw a NotSupported exception</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left">Methods inherited from class java.lang.Object</TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
</TR>
</TABLE>
&nbsp;

<A NAME="field_detail"></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TH ALIGN="left" COLSPAN="1">
Field Detail</TH>
</TR>
</TABLE>

<A NAME="NOT_SUPPORTED_CHILD_PREFIX"></A><H3>
NOT_SUPPORTED_CHILD_PREFIX</H3>
<PRE>
protected static final java.lang.String NOT_SUPPORTED_CHILD_PREFIX</PRE>
<DL>
<DD>part of the error message created by <A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#throwNotSupported(org.apache.tools.ant.Project, java.lang.Object, java.lang.String)"><CODE>throwNotSupported</CODE></A>.

<DL>
<DT>Since:</DT>
 <DD>Ant 1.8.0</DD>
<DT>See Also:<DD><A HREF="../../../../constant-values.html#org.apache.tools.ant.IntrospectionHelper.NOT_SUPPORTED_CHILD_PREFIX">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="NOT_SUPPORTED_CHILD_POSTFIX"></A><H3>
NOT_SUPPORTED_CHILD_POSTFIX</H3>
<PRE>
protected static final java.lang.String NOT_SUPPORTED_CHILD_POSTFIX</PRE>
<DL>
<DD>part of the error message created by <A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#throwNotSupported(org.apache.tools.ant.Project, java.lang.Object, java.lang.String)"><CODE>throwNotSupported</CODE></A>.

<DL>
<DT>Since:</DT>
 <DD>Ant 1.8.0</DD>
<DT>See Also:<DD><A HREF="../../../../constant-values.html#org.apache.tools.ant.IntrospectionHelper.NOT_SUPPORTED_CHILD_POSTFIX">Constant Field Values</A></DL>
</DL>

<A NAME="method_detail"></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="1">
Method Detail</TH>
</TR>
</TABLE>

<A NAME="getHelper(java.lang.Class)"></A><H3>
getHelper</H3>
<PRE>
public static <A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html" title="class in org.apache.tools.ant">IntrospectionHelper</A> getHelper(java.lang.Class&nbsp;c)</PRE>
<DL>
<DD>Returns a helper for the given class, either from the cache
 or by creating a new instance.

<DD><DL>
<DT>Parameters:<DD><CODE>c</CODE> - The class for which a helper is required.
 Must not be <code>null</code>.
<DT>Returns:<DD>a helper for the specified class</DL>
</DD>
</DL>
<HR>

<A NAME="getHelper(org.apache.tools.ant.Project, java.lang.Class)"></A><H3>
getHelper</H3>
<PRE>
public static <A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html" title="class in org.apache.tools.ant">IntrospectionHelper</A> getHelper(<A HREF="../../../../org/apache/tools/ant/Project.html" title="class in org.apache.tools.ant">Project</A>&nbsp;p,
 java.lang.Class&nbsp;c)</PRE>
<DL>
<DD>Returns a helper for the given class, either from the cache
 or by creating a new instance.

The method will make sure the helper will be cleaned up at the end of
 the project, and only one instance will be created for each class.

<DD><DL>
<DT>Parameters:<DD><CODE>p</CODE> - the project instance. Can be null, in which case the helper is not cached.<DD><CODE>c</CODE> - The class for which a helper is required.
 Must not be <code>null</code>.
<DT>Returns:<DD>a helper for the specified class</DL>
</DD>
</DL>
<HR>

<A NAME="setAttribute(org.apache.tools.ant.Project, java.lang.Object, java.lang.String, java.lang.Object)"></A><H3>
setAttribute</H3>
<PRE>
public void setAttribute(<A HREF="../../../../org/apache/tools/ant/Project.html" title="class in org.apache.tools.ant">Project</A>&nbsp;p,
 java.lang.Object&nbsp;element,
 java.lang.String&nbsp;attributeName,
 java.lang.Object&nbsp;value)
 throws <A HREF="../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></PRE>
<DL>
<DD>Sets the named attribute in the given element, which is part of the
 given project.

<DD><DL>
<DT>Parameters:<DD><CODE>p</CODE> - The project containing the element. This is used when files
 need to be resolved. Must not be <code>null</code>.<DD><CODE>element</CODE> - The element to set the attribute in. Must not be
 <code>null</code>.<DD><CODE>attributeName</CODE> - The name of the attribute to set. Must not be
 <code>null</code>.<DD><CODE>value</CODE> - The value to set the attribute to. This may be interpreted
 or converted to the necessary type if the setter method
 doesn't accept an object of the supplied type.
<DT>Throws:
<DD><CODE><A HREF="../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></CODE> - if the introspected class doesn't support
 the given attribute, or if the setting
 method fails.</DL>
</DD>
</DL>
<HR>

<A NAME="setAttribute(org.apache.tools.ant.Project, java.lang.Object, java.lang.String, java.lang.String)"></A><H3>
setAttribute</H3>
<PRE>
public void setAttribute(<A HREF="../../../../org/apache/tools/ant/Project.html" title="class in org.apache.tools.ant">Project</A>&nbsp;p,
 java.lang.Object&nbsp;element,
 java.lang.String&nbsp;attributeName,
 java.lang.String&nbsp;value)
 throws <A HREF="../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></PRE>
<DL>
<DD>Sets the named attribute in the given element, which is part of the
 given project.

<DD><DL>
<DT>Parameters:<DD><CODE>p</CODE> - The project containing the element. This is used when files
 need to be resolved. Must not be <code>null</code>.<DD><CODE>element</CODE> - The element to set the attribute in. Must not be
 <code>null</code>.<DD><CODE>attributeName</CODE> - The name of the attribute to set. Must not be
 <code>null</code>.<DD><CODE>value</CODE> - The value to set the attribute to. This may be interpreted
 or converted to the necessary type if the setter method
 doesn't just take a string. Must not be <code>null</code>.
<DT>Throws:
<DD><CODE><A HREF="../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></CODE> - if the introspected class doesn't support
 the given attribute, or if the setting
 method fails.</DL>
</DD>
</DL>
<HR>

<A NAME="addText(org.apache.tools.ant.Project, java.lang.Object, java.lang.String)"></A><H3>
addText</H3>
<PRE>
public void addText(<A HREF="../../../../org/apache/tools/ant/Project.html" title="class in org.apache.tools.ant">Project</A>&nbsp;project,
 java.lang.Object&nbsp;element,
 java.lang.String&nbsp;text)
 throws <A HREF="../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></PRE>
<DL>
<DD>Adds PCDATA to an element, using the element's
 <code>void addText(String)</code> method, if it has one. If no
 such method is present, a BuildException is thrown if the
 given text contains non-whitespace.

<DD><DL>
<DT>Parameters:<DD><CODE>project</CODE> - The project which the element is part of.
 Must not be <code>null</code>.<DD><CODE>element</CODE> - The element to add the text to.
 Must not be <code>null</code>.<DD><CODE>text</CODE> - The text to add.
 Must not be <code>null</code>.
<DT>Throws:
<DD><CODE><A HREF="../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></CODE> - if non-whitespace text is provided and no
 method is available to handle it, or if
 the handling method fails.</DL>
</DD>
</DL>
<HR>

<A NAME="throwNotSupported(org.apache.tools.ant.Project, java.lang.Object, java.lang.String)"></A><H3>
throwNotSupported</H3>
<PRE>
public void throwNotSupported(<A HREF="../../../../org/apache/tools/ant/Project.html" title="class in org.apache.tools.ant">Project</A>&nbsp;project,
 java.lang.Object&nbsp;parent,
 java.lang.String&nbsp;elementName)</PRE>
<DL>
<DD>Utility method to throw a NotSupported exception

<DD><DL>
<DT>Parameters:<DD><CODE>project</CODE> - the Project instance.<DD><CODE>parent</CODE> - the object which doesn't support a requested element<DD><CODE>elementName</CODE> - the name of the Element which is trying to be created.</DL>
</DD>
</DL>
<HR>

<A NAME="createElement(org.apache.tools.ant.Project, java.lang.Object, java.lang.String)"></A><H3>
createElement</H3>
<PRE>
public java.lang.Object createElement(<A HREF="../../../../org/apache/tools/ant/Project.html" title="class in org.apache.tools.ant">Project</A>&nbsp;project,
 java.lang.Object&nbsp;parent,
 java.lang.String&nbsp;elementName)
 throws <A HREF="../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></PRE>
<DL>
<DD>Deprecated.&nbsp;since 1.6.x.
 This is not a namespace aware method.

<DD>Creates a named nested element. Depending on the results of the
 initial introspection, either a method in the given parent instance
 or a simple no-arg constructor is used to create an instance of the
 specified element type.

<DD><DL>
<DT>Parameters:<DD><CODE>project</CODE> - Project to which the parent object belongs.
 Must not be <code>null</code>. If the resulting
 object is an instance of ProjectComponent, its
 Project reference is set to this parameter value.<DD><CODE>parent</CODE> - Parent object used to create the instance.
 Must not be <code>null</code>.<DD><CODE>elementName</CODE> - Name of the element to create an instance of.
 Must not be <code>null</code>.
<DT>Returns:<DD>an instance of the specified element type
<DT>Throws:
<DD><CODE><A HREF="../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></CODE> - if no method is available to create the
 element instance, or if the creating method fails.</DL>
</DD>
</DL>
<HR>

<A NAME="getElementCreator(org.apache.tools.ant.Project, java.lang.String, java.lang.Object, java.lang.String, org.apache.tools.ant.UnknownElement)"></A><H3>
getElementCreator</H3>
<PRE>
public <A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.Creator.html" title="class in org.apache.tools.ant">IntrospectionHelper.Creator</A> getElementCreator(<A HREF="../../../../org/apache/tools/ant/Project.html" title="class in org.apache.tools.ant">Project</A>&nbsp;project,
 java.lang.String&nbsp;parentUri,
 java.lang.Object&nbsp;parent,
 java.lang.String&nbsp;elementName,
 <A HREF="../../../../org/apache/tools/ant/UnknownElement.html" title="class in org.apache.tools.ant">UnknownElement</A>&nbsp;ue)</PRE>
<DL>
<DD>returns an object that creates and stores an object
 for an element of a parent.

<DD><DL>
<DT>Parameters:<DD><CODE>project</CODE> - Project to which the parent object belongs.<DD><CODE>parentUri</CODE> - The namespace uri of the parent object.<DD><CODE>parent</CODE> - Parent object used to create the creator object to
 create and store and instance of a subelement.<DD><CODE>elementName</CODE> - Name of the element to create an instance of.<DD><CODE>ue</CODE> - The unknown element associated with the element.
<DT>Returns:<DD>a creator object to create and store the element instance.</DL>
</DD>
</DL>
<HR>

<A NAME="isDynamic()"></A><H3>
isDynamic</H3>
<PRE>
public boolean isDynamic()</PRE>
<DL>
<DD>Indicates whether the introspected class is a dynamic one,
 supporting arbitrary nested elements and/or attributes.

<DD><DL>

<DT>Returns:<DD><code>true<code> if the introspected class is dynamic;
 <code>false<code> otherwise.<DT>Since:</DT>
 <DD>Ant 1.6.3</DD>
<DT>See Also:<DD><A HREF="../../../../org/apache/tools/ant/DynamicElement.html" title="interface in org.apache.tools.ant"><CODE>DynamicElement</CODE></A>, 
<A HREF="../../../../org/apache/tools/ant/DynamicElementNS.html" title="interface in org.apache.tools.ant"><CODE>DynamicElementNS</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="isContainer()"></A><H3>
isContainer</H3>
<PRE>
public boolean isContainer()</PRE>
<DL>
<DD>Indicates whether the introspected class is a task container,
 supporting arbitrary nested tasks/types.

<DD><DL>

<DT>Returns:<DD><code>true<code> if the introspected class is a container;
 <code>false<code> otherwise.<DT>Since:</DT>
 <DD>Ant 1.6.3</DD>
<DT>See Also:<DD><A HREF="../../../../org/apache/tools/ant/TaskContainer.html" title="interface in org.apache.tools.ant"><CODE>TaskContainer</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="supportsNestedElement(java.lang.String)"></A><H3>
supportsNestedElement</H3>
<PRE>
public boolean supportsNestedElement(java.lang.String&nbsp;elementName)</PRE>
<DL>
<DD>Indicates if this element supports a nested element of the
 given name.

<DD><DL>
<DT>Parameters:<DD><CODE>elementName</CODE> - the name of the nested element being checked
<DT>Returns:<DD>true if the given nested element is supported</DL>
</DD>
</DL>
<HR>

<A NAME="supportsNestedElement(java.lang.String, java.lang.String)"></A><H3>
supportsNestedElement</H3>
<PRE>
public boolean supportsNestedElement(java.lang.String&nbsp;parentUri,
 java.lang.String&nbsp;elementName)</PRE>
<DL>
<DD>Indicate if this element supports a nested element of the
 given name.

Note that this method will always return true if the
 introspected class is <A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#isDynamic()"><CODE>dynamic</CODE></A> or contains a
 method named "add" with void return type and a single argument.
 To ge a more thorough answer, use the four-arg version of this
 method instead.

<DD><DL>
<DT>Parameters:<DD><CODE>parentUri</CODE> - the uri of the parent<DD><CODE>elementName</CODE> - the name of the nested element being checked
<DT>Returns:<DD>true if the given nested element is supported</DL>
</DD>
</DL>
<HR>

<A NAME="supportsNestedElement(java.lang.String, java.lang.String, org.apache.tools.ant.Project, java.lang.Object)"></A><H3>
supportsNestedElement</H3>
<PRE>
public boolean supportsNestedElement(java.lang.String&nbsp;parentUri,
 java.lang.String&nbsp;elementName,
 <A HREF="../../../../org/apache/tools/ant/Project.html" title="class in org.apache.tools.ant">Project</A>&nbsp;project,
 java.lang.Object&nbsp;parent)</PRE>
<DL>
<DD>Indicate if this element supports a nested element of the
 given name.

Note that this method will always return true if the
 introspected class is <A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#isDynamic()"><CODE>dynamic</CODE></A>, so be
 prepared to catch an exception about unsupported children when
 calling <A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#getElementCreator(org.apache.tools.ant.Project, java.lang.String, java.lang.Object, java.lang.String, org.apache.tools.ant.UnknownElement)"><CODE>getElementCreator</CODE></A>.

<DD><DL>
<DT>Parameters:<DD><CODE>parentUri</CODE> - the uri of the parent<DD><CODE>elementName</CODE> - the name of the nested element being checked<DD><CODE>project</CODE> - currently executing project instance<DD><CODE>parent</CODE> - the parent element
<DT>Returns:<DD>true if the given nested element is supported<DT>Since:</DT>
 <DD>Ant 1.8.0.</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="supportsReflectElement(java.lang.String, java.lang.String)"></A><H3>
supportsReflectElement</H3>
<PRE>
public boolean supportsReflectElement(java.lang.String&nbsp;parentUri,
 java.lang.String&nbsp;elementName)</PRE>
<DL>
<DD>Check if this element supports a nested element from reflection.

<DD><DL>
<DT>Parameters:<DD><CODE>parentUri</CODE> - the uri of the parent<DD><CODE>elementName</CODE> - the name of the nested element being checked
<DT>Returns:<DD>true if the given nested element is supported<DT>Since:</DT>
 <DD>Ant 1.8.0</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="storeElement(org.apache.tools.ant.Project, java.lang.Object, java.lang.Object, java.lang.String)"></A><H3>
storeElement</H3>
<PRE>
public void storeElement(<A HREF="../../../../org/apache/tools/ant/Project.html" title="class in org.apache.tools.ant">Project</A>&nbsp;project,
 java.lang.Object&nbsp;parent,
 java.lang.Object&nbsp;child,
 java.lang.String&nbsp;elementName)
 throws <A HREF="../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></PRE>
<DL>
<DD>Stores a named nested element using a storage method determined
 by the initial introspection. If no appropriate storage method
 is available, this method returns immediately.

<DD><DL>
<DT>Parameters:<DD><CODE>project</CODE> - Ignored in this implementation.
 May be <code>null</code>.<DD><CODE>parent</CODE> - Parent instance to store the child in.
 Must not be <code>null</code>.<DD><CODE>child</CODE> - Child instance to store in the parent.
 Should not be <code>null</code>.<DD><CODE>elementName</CODE> - Name of the child element to store.
 May be <code>null</code>, in which case
 this method returns immediately.
<DT>Throws:
<DD><CODE><A HREF="../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></CODE> - if the storage method fails.</DL>
</DD>
</DL>
<HR>

<A NAME="getElementType(java.lang.String)"></A><H3>
getElementType</H3>
<PRE>
public java.lang.Class getElementType(java.lang.String&nbsp;elementName)
 throws <A HREF="../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></PRE>
<DL>
<DD>Returns the type of a named nested element.

<DD><DL>
<DT>Parameters:<DD><CODE>elementName</CODE> - The name of the element to find the type of.
 Must not be <code>null</code>.
<DT>Returns:<DD>the type of the nested element with the specified name.
 This will never be <code>null</code>.
<DT>Throws:
<DD><CODE><A HREF="../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></CODE> - if the introspected class does not
 support the named nested element.</DL>
</DD>
</DL>
<HR>

<A NAME="getAttributeType(java.lang.String)"></A><H3>
getAttributeType</H3>
<PRE>
public java.lang.Class getAttributeType(java.lang.String&nbsp;attributeName)
 throws <A HREF="../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></PRE>
<DL>
<DD>Returns the type of a named attribute.

<DD><DL>
<DT>Parameters:<DD><CODE>attributeName</CODE> - The name of the attribute to find the type of.
 Must not be <code>null</code>.
<DT>Returns:<DD>the type of the attribute with the specified name.
 This will never be <code>null</code>.
<DT>Throws:
<DD><CODE><A HREF="../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></CODE> - if the introspected class does not
 support the named attribute.</DL>
</DD>
</DL>
<HR>

<A NAME="getAddTextMethod()"></A><H3>
getAddTextMethod</H3>
<PRE>
public java.lang.reflect.Method getAddTextMethod()
 throws <A HREF="../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></PRE>
<DL>
<DD>Returns the addText method when the introspected
 class supports nested text.

<DD><DL>

<DT>Returns:<DD>the method on this introspected class that adds nested text.
 Cannot be <code>null</code>.
<DT>Throws:
<DD><CODE><A HREF="../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></CODE> - if the introspected class does not
 support the nested text.<DT>Since:</DT>
 <DD>Ant 1.6.3</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="getElementMethod(java.lang.String)"></A><H3>
getElementMethod</H3>
<PRE>
public java.lang.reflect.Method getElementMethod(java.lang.String&nbsp;elementName)
 throws <A HREF="../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></PRE>
<DL>
<DD>Returns the adder or creator method of a named nested element.

<DD><DL>
<DT>Parameters:<DD><CODE>elementName</CODE> - The name of the attribute to find the setter
 method of. Must not be <code>null</code>.
<DT>Returns:<DD>the method on this introspected class that adds or creates this
 nested element. Can be <code>null</code> when the introspected
 class is a dynamic configurator!
<DT>Throws:
<DD><CODE><A HREF="../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></CODE> - if the introspected class does not
 support the named nested element.<DT>Since:</DT>
 <DD>Ant 1.6.3</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="getAttributeMethod(java.lang.String)"></A><H3>
getAttributeMethod</H3>
<PRE>
public java.lang.reflect.Method getAttributeMethod(java.lang.String&nbsp;attributeName)
 throws <A HREF="../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></PRE>
<DL>
<DD>Returns the setter method of a named attribute.

<DD><DL>
<DT>Parameters:<DD><CODE>attributeName</CODE> - The name of the attribute to find the setter
 method of. Must not be <code>null</code>.
<DT>Returns:<DD>the method on this introspected class that sets this attribute.
 This will never be <code>null</code>.
<DT>Throws:
<DD><CODE><A HREF="../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></CODE> - if the introspected class does not
 support the named attribute.<DT>Since:</DT>
 <DD>Ant 1.6.3</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="supportsCharacters()"></A><H3>
supportsCharacters</H3>
<PRE>
public boolean supportsCharacters()</PRE>
<DL>
<DD>Returns whether or not the introspected class supports PCDATA.

<DD><DL>

<DT>Returns:<DD>whether or not the introspected class supports PCDATA.</DL>
</DD>
</DL>
<HR>

<A NAME="getAttributes()"></A><H3>
getAttributes</H3>
<PRE>
public java.util.Enumeration getAttributes()</PRE>
<DL>
<DD>Returns an enumeration of the names of the attributes supported by the introspected class.

<DD><DL>

<DT>Returns:<DD>an enumeration of the names of the attributes supported by the introspected class.<DT>See Also:<DD><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#getAttributeMap()"><CODE>getAttributeMap()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getAttributeMap()"></A><H3>
getAttributeMap</H3>
<PRE>
public java.util.Map getAttributeMap()</PRE>
<DL>
<DD>Returns a read-only map of attributes supported by the introspected class.

<DD><DL>

<DT>Returns:<DD>an attribute name to attribute <code>Class</code>
 unmodifiable map. Can be empty, but never <code>null</code>.<DT>Since:</DT>
 <DD>Ant 1.6.3</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="getNestedElements()"></A><H3>
getNestedElements</H3>
<PRE>
public java.util.Enumeration getNestedElements()</PRE>
<DL>
<DD>Returns an enumeration of the names of the nested elements supported
 by the introspected class.

<DD><DL>

<DT>Returns:<DD>an enumeration of the names of the nested elements supported
 by the introspected class.<DT>See Also:<DD><A HREF="../../../../org/apache/tools/ant/IntrospectionHelper.html#getNestedElementMap()"><CODE>getNestedElementMap()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getNestedElementMap()"></A><H3>
getNestedElementMap</H3>
<PRE>
public java.util.Map getNestedElementMap()</PRE>
<DL>
<DD>Returns a read-only map of nested elements supported
 by the introspected class.

<DD><DL>

<DT>Returns:<DD>a nested-element name to nested-element <code>Class</code>
 unmodifiable map. Can be empty, but never <code>null</code>.<DT>Since:</DT>
 <DD>Ant 1.6.3</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="getExtensionPoints()"></A><H3>
getExtensionPoints</H3>
<PRE>
public java.util.List getExtensionPoints()</PRE>
<DL>
<DD>Returns a read-only list of extension points supported
 by the introspected class.
 
 A task/type or nested element with void methods named <code>add()<code>
 or <code>addConfigured()</code>, taking a single class or interface
 argument, supports extensions point. This method returns the list of
 all these void add[Configured](type) methods.

<DD><DL>

<DT>Returns:<DD>a list of void, single argument add() or addConfigured()
 <code>Method<code>s of all supported extension points.
 These methods are sorted such that if the argument type of a
 method derives from another type also an argument of a method
 of this list, the method with the most derived argument will
 always appear first. Can be empty, but never <code>null</code>.<DT>Since:</DT>
 <DD>Ant 1.6.3</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="clearCache()"></A><H3>
clearCache</H3>
<PRE>
public static void clearCache()</PRE>
<DL>
<DD>Clears the static cache of on build finished.

<DD><DL>
</DL>
</DD>
</DL>

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