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<div class="subTitle">javax.jdo.annotations</div>
<h2 title="Annotation Type Element" class="title">Annotation Type Element</h2>
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<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/annotation/Target.html?is-external=true" title="class or interface in java.lang.annotation">@Target</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/annotation/Target.html?is-external=true#value--" title="class or interface in java.lang.annotation">value</a>={<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/annotation/ElementType.html?is-external=true#ANNOTATION_TYPE" title="class or interface in java.lang.annotation">ANNOTATION_TYPE</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/annotation/ElementType.html?is-external=true#FIELD" title="class or interface in java.lang.annotation">FIELD</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/annotation/ElementType.html?is-external=true#METHOD" title="class or interface in java.lang.annotation">METHOD</a>})
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/annotation/Retention.html?is-external=true" title="class or interface in java.lang.annotation">@Retention</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/annotation/Retention.html?is-external=true#value--" title="class or interface in java.lang.annotation">value</a>=<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/annotation/RetentionPolicy.html?is-external=true#RUNTIME" title="class or interface in java.lang.annotation">RUNTIME</a>)
public @interface <span class="memberNameLabel">Element</span></pre>
<div class="block">Annotation for the element of a collection/array relation.
Corresponds to the xml element "element".</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>2.1</dd>
<dt><span class="simpleTagLabel">Version:</span></dt>
<dd>2.1</dd>
</dl>
</li>
</ul>
</div>
<div class="summary">
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<li class="blockList">
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<h3>Optional Element Summary</h3>
<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Optional Element Summary table, listing optional elements, and an explanation">
<caption><span>Optional Elements</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Optional Element and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/jdo/annotations/Element.html#column--">column</a></span></code>
<div class="block">Name of the column to store the element in.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../javax/jdo/annotations/Column.html" title="annotation in javax.jdo.annotations">Column</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/jdo/annotations/Element.html#columns--">columns</a></span></code>
<div class="block">The column(s) for the element.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&lt;? extends <a href="../../../javax/jdo/AttributeConverter.html" title="interface in javax.jdo">AttributeConverter</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/jdo/annotations/Element.html#converter--">converter</a></span></code>
<div class="block">Optional <a href="../../../javax/jdo/AttributeConverter.html" title="interface in javax.jdo"><code>AttributeConverter</code></a> to use for converting this element.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../javax/jdo/annotations/ForeignKeyAction.html" title="enum in javax.jdo.annotations">ForeignKeyAction</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/jdo/annotations/Element.html#deleteAction--">deleteAction</a></span></code>
<div class="block">Delete action to apply to any foreign key for the element.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/jdo/annotations/Element.html#dependent--">dependent</a></span></code>
<div class="block">Whether the element is dependent on the owner, and will be deleted
when the owner is deleted.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/jdo/annotations/Element.html#embedded--">embedded</a></span></code>
<div class="block">Whether this element is embedded.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../javax/jdo/annotations/Embedded.html" title="annotation in javax.jdo.annotations">Embedded</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/jdo/annotations/Element.html#embeddedMapping--">embeddedMapping</a></span></code>
<div class="block">The embedded mapping for the element.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../javax/jdo/annotations/Extension.html" title="annotation in javax.jdo.annotations">Extension</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/jdo/annotations/Element.html#extensions--">extensions</a></span></code>
<div class="block">Vendor extensions.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/jdo/annotations/Element.html#foreignKey--">foreignKey</a></span></code>
<div class="block">Name for a generated foreign key constraint.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/jdo/annotations/Element.html#generateForeignKey--">generateForeignKey</a></span></code>
<div class="block">Generate or assume a foreign key constraint exists on the column
or columns associated with this join.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/jdo/annotations/Element.html#index--">index</a></span></code>
<div class="block">The name of the index to generate.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/jdo/annotations/Element.html#indexed--">indexed</a></span></code>
<div class="block">Whether the value column(s) should be indexed.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/jdo/annotations/Element.html#mappedBy--">mappedBy</a></span></code>
<div class="block">Name of the member in the target class that forms a bidirectional
relationship with this member.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/jdo/annotations/Element.html#serialized--">serialized</a></span></code>
<div class="block">Whether the element is to be stored serialized (into a join table)</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/jdo/annotations/Element.html#table--">table</a></span></code>
<div class="block">Name of the table for the element.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/jdo/annotations/Element.html#types--">types</a></span></code>
<div class="block">Types of the elements.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/jdo/annotations/Element.html#unique--">unique</a></span></code>
<div class="block">Whether a unique constraint should be generated or assumed.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/jdo/annotations/Element.html#uniqueKey--">uniqueKey</a></span></code>
<div class="block">The name of the unique key constraint to generate.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../javax/jdo/annotations/ForeignKeyAction.html" title="enum in javax.jdo.annotations">ForeignKeyAction</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/jdo/annotations/Element.html#updateAction--">updateAction</a></span></code>
<div class="block">Update action to apply to any foreign key for the element</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/jdo/annotations/Element.html#useDefaultConversion--">useDefaultConversion</a></span></code>
<div class="block">Whether we should disable any converter that was specified as default for this type on the PMF.</div>
</td>
</tr>
</table>
</li>
</ul>
</li>
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<h3>Element Detail</h3>
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<h4>types</h4>
<pre>public abstract&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>[]&nbsp;types</pre>
<div class="block">Types of the elements. This can be determined if using JDK1.5 generics
but is required otherwise. Multiple types can be specified if the
implementation supports multiple types.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the types of elements</dd>
</dl>
<dl>
<dt>Default:</dt>
<dd>{}</dd>
</dl>
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<h4>serialized</h4>
<pre>public abstract&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;serialized</pre>
<div class="block">Whether the element is to be stored serialized (into a join table)</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>whether the element is to be stored serialized
(into a join table)</dd>
</dl>
<dl>
<dt>Default:</dt>
<dd>""</dd>
</dl>
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<h4>embedded</h4>
<pre>public abstract&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;embedded</pre>
<div class="block">Whether this element is embedded.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>whether this element is embedded</dd>
</dl>
<dl>
<dt>Default:</dt>
<dd>""</dd>
</dl>
</li>
</ul>
</li>
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<h4>embeddedMapping</h4>
<pre>public abstract&nbsp;<a href="../../../javax/jdo/annotations/Embedded.html" title="annotation in javax.jdo.annotations">Embedded</a>[]&nbsp;embeddedMapping</pre>
<div class="block">The embedded mapping for the element.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the embedded mapping for the element</dd>
</dl>
<dl>
<dt>Default:</dt>
<dd>{}</dd>
</dl>
</li>
</ul>
</li>
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<h4>dependent</h4>
<pre>public abstract&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;dependent</pre>
<div class="block">Whether the element is dependent on the owner, and will be deleted
when the owner is deleted.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>whether the element is dependent on the owner, and will be
deleted when the owner is deleted</dd>
</dl>
<dl>
<dt>Default:</dt>
<dd>""</dd>
</dl>
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<h4>table</h4>
<pre>public abstract&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;table</pre>
<div class="block">Name of the table for the element.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>name of the table for the element</dd>
</dl>
<dl>
<dt>Default:</dt>
<dd>""</dd>
</dl>
</li>
</ul>
</li>
</ul>
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<h4>column</h4>
<pre>public abstract&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;column</pre>
<div class="block">Name of the column to store the element in.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>name of the column to store the element in</dd>
</dl>
<dl>
<dt>Default:</dt>
<dd>""</dd>
</dl>
</li>
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<h4>deleteAction</h4>
<pre>public abstract&nbsp;<a href="../../../javax/jdo/annotations/ForeignKeyAction.html" title="enum in javax.jdo.annotations">ForeignKeyAction</a>&nbsp;deleteAction</pre>
<div class="block">Delete action to apply to any foreign key for the element.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>delete action to apply to any foreign key for the element</dd>
</dl>
<dl>
<dt>Default:</dt>
<dd>javax.jdo.annotations.ForeignKeyAction.UNSPECIFIED</dd>
</dl>
</li>
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</li>
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<h4>updateAction</h4>
<pre>public abstract&nbsp;<a href="../../../javax/jdo/annotations/ForeignKeyAction.html" title="enum in javax.jdo.annotations">ForeignKeyAction</a>&nbsp;updateAction</pre>
<div class="block">Update action to apply to any foreign key for the element</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>update action to apply to any foreign key for the element</dd>
</dl>
<dl>
<dt>Default:</dt>
<dd>javax.jdo.annotations.ForeignKeyAction.UNSPECIFIED</dd>
</dl>
</li>
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<h4>indexed</h4>
<pre>public abstract&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;indexed</pre>
<div class="block">Whether the value column(s) should be indexed.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>whether the value column(s) should be indexed.</dd>
</dl>
<dl>
<dt>Default:</dt>
<dd>""</dd>
</dl>
</li>
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</li>
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<h4>index</h4>
<pre>public abstract&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;index</pre>
<div class="block">The name of the index to generate.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the name of the index</dd>
</dl>
<dl>
<dt>Default:</dt>
<dd>""</dd>
</dl>
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<h4>unique</h4>
<pre>public abstract&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;unique</pre>
<div class="block">Whether a unique constraint should be generated or assumed.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>whether a unique constraint should be generated or assumed</dd>
</dl>
<dl>
<dt>Default:</dt>
<dd>""</dd>
</dl>
</li>
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<pre>public abstract&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;uniqueKey</pre>
<div class="block">The name of the unique key constraint to generate.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the name of the unique key constraint</dd>
</dl>
<dl>
<dt>Default:</dt>
<dd>""</dd>
</dl>
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<h4>mappedBy</h4>
<pre>public abstract&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;mappedBy</pre>
<div class="block">Name of the member in the target class that forms a bidirectional
relationship with this member.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>name of the member in the target class that forms a bidirectional
relationship with this member</dd>
</dl>
<dl>
<dt>Default:</dt>
<dd>""</dd>
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<h4>columns</h4>
<pre>public abstract&nbsp;<a href="../../../javax/jdo/annotations/Column.html" title="annotation in javax.jdo.annotations">Column</a>[]&nbsp;columns</pre>
<div class="block">The column(s) for the element.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the column(s) for the element</dd>
</dl>
<dl>
<dt>Default:</dt>
<dd>{}</dd>
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<h4>generateForeignKey</h4>
<pre>public abstract&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;generateForeignKey</pre>
<div class="block">Generate or assume a foreign key constraint exists on the column
or columns associated with this join. Specify "true" or "false".</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>whether to generate or assume a primary key constraint</dd>
</dl>
<dl>
<dt>Default:</dt>
<dd>""</dd>
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<h4>foreignKey</h4>
<pre>public abstract&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;foreignKey</pre>
<div class="block">Name for a generated foreign key constraint.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the name of the generated foreign key constraint</dd>
</dl>
<dl>
<dt>Default:</dt>
<dd>""</dd>
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<h4>converter</h4>
<pre>public abstract&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&lt;? extends <a href="../../../javax/jdo/AttributeConverter.html" title="interface in javax.jdo">AttributeConverter</a>&gt;&nbsp;converter</pre>
<div class="block">Optional <a href="../../../javax/jdo/AttributeConverter.html" title="interface in javax.jdo"><code>AttributeConverter</code></a> to use for converting this element.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The converter class (or NullAttributeConverter if not specified).</dd>
</dl>
<dl>
<dt>Default:</dt>
<dd>javax.jdo.AttributeConverter.UseDefault.class</dd>
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<h4>useDefaultConversion</h4>
<pre>public abstract&nbsp;boolean&nbsp;useDefaultConversion</pre>
<div class="block">Whether we should disable any converter that was specified as default for this type on the PMF.
Only has any effect when this is explicitly set to true, when any AttributeConverter specified for this type
either here or for the class or at the PMF will be ignored and will use the JDO implementation default handling.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Whether PMF attribute conversion is to be disabled.</dd>
</dl>
<dl>
<dt>Default:</dt>
<dd>false</dd>
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<h4>extensions</h4>
<pre>public abstract&nbsp;<a href="../../../javax/jdo/annotations/Extension.html" title="annotation in javax.jdo.annotations">Extension</a>[]&nbsp;extensions</pre>
<div class="block">Vendor extensions.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the vendor extensions</dd>
</dl>
<dl>
<dt>Default:</dt>
<dd>{}</dd>
</dl>
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