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<div class="subTitle">net.jini.security</div>
<h2 title="Class GrantPermission" class="title">Class GrantPermission</h2>
</div>
<div class="contentContainer">
<ul class="inheritance">
<li><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
<li>
<ul class="inheritance">
<li><a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true" title="class or interface in java.security">java.security.Permission</a></li>
<li>
<ul class="inheritance">
<li>net.jini.security.GrantPermission</li>
</ul>
</li>
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</li>
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<dl>
<dt>All Implemented Interfaces:</dt>
<dd><a href="http://docs.oracle.com/javase/6/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/security/Guard.html?is-external=true" title="class or interface in java.security">Guard</a></dd>
</dl>
<hr>
<br>
<pre>public final class <span class="typeNameLabel">GrantPermission</span>
extends <a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true" title="class or interface in java.security">Permission</a></pre>
<div class="block">Permission required to dynamically grant permissions by security policy
providers which implement the <a href="../../../net/jini/security/policy/DynamicPolicy.html" title="interface in net.jini.security.policy"><code>DynamicPolicy</code></a> interface. Each
<code>GrantPermission</code> instance contains a set of permissions that can
be granted by code authorized with the <code>GrantPermission</code>. When
the <a href="../../../net/jini/security/policy/DynamicPolicy.html#grant-java.lang.Class-java.security.Principal:A-java.security.Permission:A-"><code>DynamicPolicy.grant</code></a> method is invoked, the
<code>checkPermission</code> method of the installed security manager (if
any) is called with a <code>GrantPermission</code> containing the
permissions to grant; if the calling context does not have any permissions
which imply the <code>GrantPermission</code>, then the grant operation will
fail.
<p>
In addition to authorizing granting of contained permissions, each
<code>GrantPermission</code> also authorizes granting of
<code>GrantPermission</code>s for contained permissions, as well as granting
of permissions contained within nested <code>GrantPermission</code>s. For
example, if <code>GrantPermission g1</code> contains <code>Permission
p</code>, <code>g1</code> authorizes granting of both <code>p</code> and
<code>GrantPermission(p)</code>; if <code>GrantPermission g2</code> contains
<code>GrantPermission(p)</code>, then <code>g2</code> also authorizes
granting of both <code>p</code> and <code>GrantPermission(p)</code>.
<p>
The name (also referred to as the "target name") of each
<code>GrantPermission</code> instance carries a string representation of the
permissions contained by the <code>GrantPermission</code>, while the actions
string of each <code>GrantPermission</code> is always the empty string. If
a <code>GrantPermission</code> is serialized, only its name string is sent
(i.e., contained permissions are not themselves serialized). Upon
deserialization, the set of contained permissions is reconstituted based on
information in the name string. <code>GrantPermission</code>s constructed
explicitly with <a href="http://docs.oracle.com/javase/6/docs/api/java/security/UnresolvedPermission.html?is-external=true" title="class or interface in java.security"><code>UnresolvedPermission</code></a>s (through either the <a href="../../../net/jini/security/GrantPermission.html#GrantPermission-java.security.Permission-"><code>GrantPermission(Permission)</code></a> or <a href="../../../net/jini/security/GrantPermission.html#GrantPermission-java.security.Permission:A-"><code>GrantPermission(Permission[])</code></a>
constructor) will have incomplete target names that cannot be used to
instantiate other <code>GrantPermission</code>s, and will not be
serializable--attempting to serialize such a <code>GrantPermission</code>
will cause a <code>java.io.NotSerializableException</code> to be thrown.
<p>
The syntax of the target name approximates that used for specifying
permissions in the default security policy file; it is listed below using
the same grammar notation employed by <i>The Java(TM) Language
Specification</i>:
<pre>
<i>Target</i>:
<i>DelimiterDeclaration</i><sub>opt</sub> <i>Permissions</i> ;<sub>opt</sub>
<i>DelimiterDeclaration</i>:
delim = <i>DelimiterCharacter</i>
<i>Permissions</i>:
<i>Permission</i>
<i>Permissions</i> ; <i>Permission</i>
<i>Permission</i>:
<i>PermissionClassName</i>
<i>PermissionClassName Name</i>
<i>PermissionClassName Name</i> , <i>Actions</i>
<i>PermissionClassName</i>:
<i>ClassName</i>
<i>Name</i>:
<i>DelimitedString</i>
<i>Actions</i>:
<i>DelimitedString</i>
</pre>
The production for <i>ClassName</i> is the same as that used in <i>The
Java Language Specification</i>. <i>DelimiterCharacter</i> can be any
unquoted non-whitespace character other than ';' (single and
double-quote characters themselves are allowed). If
<i>DelimiterCharacter</i> is not specified, then the double-quote
character is the default delimiter. <i>DelimitedString</i> is the same
as the <i>StringLiteral</i> production in <i>The Java Language
Specification</i>, except that it is delimited by the
<i>DelimiterDeclaration</i>-specified (or default) delimiter character
instead of the double-quote character exclusively.
<p>
Note that if the double-quote character is used as the delimiter and the
name or actions strings of specified permissions themselves contain nested
double-quote characters, then those characters must be escaped (or in some
cases doubly-escaped) appropriately. For example, the following policy file
entry would yield a <code>GrantPermission</code> containing a
<code>FooPermission</code> in which the target name would include the word
"quoted" surrounded by double-quote characters:
<pre>
permission net.jini.security.GrantPermission
"FooPermission \"a \\\"quoted\\\" string\"";
</pre>
For comparison, the following policy file entry which uses a custom
delimiter would yield an equivalent <code>GrantPermission</code>:
<pre>
permission net.jini.security.GrantPermission
"delim=| FooPermission |a \"quoted\" string|";
</pre>
Some additional example policy file permissions:
<pre>
// allow granting of permission to listen for and accept connections
permission net.jini.security.GrantPermission
"java.net.SocketPermission \"localhost:1024-\", \"accept,listen\"";
// allow granting of permissions to read files under /foo, /bar directories
permission net.jini.security.GrantPermission
"delim=' java.io.FilePermission '/foo/-', 'read'; java.io.FilePermission '/bar/-', 'read'";
// allow granting of permission for client authentication as jack, with or without delegation, to any server
permission net.jini.security.GrantPermission
"delim=| net.jini.security.AuthenticationPermission |javax.security.auth.x500.X500Principal \"CN=jack\"|, |delegate|";
</pre></div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>2.0</dd>
<dt><span class="simpleTagLabel">Author:</span></dt>
<dd>Sun Microsystems, Inc.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../net/jini/security/policy/DynamicPolicy.html#grant-java.lang.Class-java.security.Principal:A-java.security.Permission:A-"><code>DynamicPolicy.grant(Class, Principal[], Permission[])</code></a>,
<a href="../../../serialized-form.html#net.jini.security.GrantPermission">Serialized Form</a></dd>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colOne" scope="col">Constructor and Description</th>
</tr>
<tr class="altColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../net/jini/security/GrantPermission.html#GrantPermission-java.security.Permission-">GrantPermission</a></span>(<a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true" title="class or interface in java.security">Permission</a>&nbsp;permission)</code>
<div class="block">Creates a <code>GrantPermission</code> for the given permission.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../net/jini/security/GrantPermission.html#GrantPermission-java.security.Permission:A-">GrantPermission</a></span>(<a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true" title="class or interface in java.security">Permission</a>[]&nbsp;permissions)</code>
<div class="block">Creates a <code>GrantPermission</code> for the given permissions.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../net/jini/security/GrantPermission.html#GrantPermission-java.lang.String-">GrantPermission</a></span>(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;name)</code>
<div class="block">Creates a <code>GrantPermission</code> for the permission(s) specified
in the name string.</div>
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<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/security/GrantPermission.html#equals-java.lang.Object-">equals</a></span>(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;obj)</code>
<div class="block">Returns <code>true</code> if the given object is a
<code>GrantPermission</code> which both implies and is implied by this
permission; returns <code>false</code> otherwise.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/6/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="../../../net/jini/security/GrantPermission.html#getActions--">getActions</a></span>()</code>
<div class="block">Returns canonical string representation of this permission's actions,
which for <code>GrantPermission</code> is always the empty string
<code>""</code>.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/security/GrantPermission.html#hashCode--">hashCode</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/security/GrantPermission.html#implies-java.security.Permission-">implies</a></span>(<a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true" title="class or interface in java.security">Permission</a>&nbsp;permission)</code>
<div class="block">Returns <code>true</code> if the given permission is a
<code>GrantPermission</code> implied by this permission, or
<code>false</code> otherwise.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/6/docs/api/java/security/PermissionCollection.html?is-external=true" title="class or interface in java.security">PermissionCollection</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/security/GrantPermission.html#newPermissionCollection--">newPermissionCollection</a></span>()</code>
<div class="block">Returns a newly created empty mutable permission collection for
<code>GrantPermission</code> instances.</div>
</td>
</tr>
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<h3>Methods inherited from class&nbsp;java.security.<a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true" title="class or interface in java.security">Permission</a></h3>
<code><a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true#checkGuard-java.lang.Object-" title="class or interface in java.security">checkGuard</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true#getName--" title="class or interface in java.security">getName</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true#toString--" title="class or interface in java.security">toString</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<h4>GrantPermission</h4>
<pre>public&nbsp;GrantPermission(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;name)</pre>
<div class="block">Creates a <code>GrantPermission</code> for the permission(s) specified
in the name string.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>name</code> - string describing contained permissions</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang">NullPointerException</a></code> - if <code>name</code> is <code>null</code></dd>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - if unable to parse target name</dd>
</dl>
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<h4>GrantPermission</h4>
<pre>public&nbsp;GrantPermission(<a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true" title="class or interface in java.security">Permission</a>&nbsp;permission)</pre>
<div class="block">Creates a <code>GrantPermission</code> for the given permission.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>permission</code> - permission to allow to be granted</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang">NullPointerException</a></code> - if <code>permission</code> is
<code>null</code></dd>
</dl>
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<h4>GrantPermission</h4>
<pre>public&nbsp;GrantPermission(<a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true" title="class or interface in java.security">Permission</a>[]&nbsp;permissions)</pre>
<div class="block">Creates a <code>GrantPermission</code> for the given permissions. The
permissions array passed in is neither modified nor retained; subsequent
changes to the array have no effect on the <code>GrantPermission</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>permissions</code> - permissions to allow to be granted</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang">NullPointerException</a></code> - if <code>permissions</code> array or any
element of <code>permissions</code> array is <code>null</code></dd>
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<h3>Method Detail</h3>
<a name="getActions--">
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<h4>getActions</h4>
<pre>public&nbsp;<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;getActions()</pre>
<div class="block">Returns canonical string representation of this permission's actions,
which for <code>GrantPermission</code> is always the empty string
<code>""</code>.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true#getActions--" title="class or interface in java.security">getActions</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true" title="class or interface in java.security">Permission</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the empty string <code>""</code></dd>
</dl>
</li>
</ul>
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<h4>newPermissionCollection</h4>
<pre>public&nbsp;<a href="http://docs.oracle.com/javase/6/docs/api/java/security/PermissionCollection.html?is-external=true" title="class or interface in java.security">PermissionCollection</a>&nbsp;newPermissionCollection()</pre>
<div class="block">Returns a newly created empty mutable permission collection for
<code>GrantPermission</code> instances. The <code>implies</code> method
of the returned <code>PermissionCollection</code> instance is defined as
follows: for a given <code>GrantPermission g</code>, let
<code>c(g)</code> denote the set of all permissions contained within
<code>g</code> or within arbitrarily nested
<code>GrantPermission</code>s inside <code>g</code>, excluding nested
<code>GrantPermission</code>s themselves. Then, a <code>GrantPermission
g</code> is implied by the <code>PermissionCollection pc</code> if and
only if each permission in <code>c(g)</code> is implied by the union of
<code>c(p)</code> for all <code>p</code> in <code>pc</code>.
<p>
Implication of contained
<code>java.security.UnresolvedPermission</code>s is special-cased: an
<code>UnresolvedPermission p1</code> is taken to imply another
<code>UnresolvedPermission p2</code> if and only if the serialized
representations of <code>p1</code> and <code>p2</code> are identical.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true#newPermissionCollection--" title="class or interface in java.security">newPermissionCollection</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true" title="class or interface in java.security">Permission</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>newly created empty mutable permission collection for
<code>GrantPermissions</code></dd>
</dl>
</li>
</ul>
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<h4>implies</h4>
<pre>public&nbsp;boolean&nbsp;implies(<a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true" title="class or interface in java.security">Permission</a>&nbsp;permission)</pre>
<div class="block">Returns <code>true</code> if the given permission is a
<code>GrantPermission</code> implied by this permission, or
<code>false</code> otherwise. Implication is defined as follows: for a
given <code>GrantPermission g</code>, let <code>c(g)</code> denote the
set of all permissions contained within <code>g</code> or within
arbitrarily nested <code>GrantPermission</code>s inside <code>g</code>,
excluding nested <code>GrantPermission</code>s themselves. Then, a
<code>GrantPermission g1</code> is implied by another
<code>GrantPermission g2</code> if and only if each permission in
<code>c(g1)</code> is implied by <code>c(g2)</code>.
<p>
Implication of contained
<code>java.security.UnresolvedPermission</code>s is special-cased: an
<code>UnresolvedPermission p1</code> is taken to imply another
<code>UnresolvedPermission p2</code> if and only if the serialized
representations of <code>p1</code> and <code>p2</code> are identical.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true#implies-java.security.Permission-" title="class or interface in java.security">implies</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true" title="class or interface in java.security">Permission</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>permission</code> - permission to check</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd><code>true</code> if given permission is implied by this
permission, <code>false</code> otherwise</dd>
</dl>
</li>
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<h4>equals</h4>
<pre>public&nbsp;boolean&nbsp;equals(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;obj)</pre>
<div class="block">Returns <code>true</code> if the given object is a
<code>GrantPermission</code> which both implies and is implied by this
permission; returns <code>false</code> otherwise.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.security">equals</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true" title="class or interface in java.security">Permission</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>obj</code> - object to compare against</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd><code>true</code> if given object is a
<code>GrantPermission</code> which both implies and is implied
by this permission, <code>false</code> otherwise</dd>
</dl>
</li>
</ul>
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<ul class="blockListLast">
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<h4>hashCode</h4>
<pre>public&nbsp;int&nbsp;hashCode()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true#hashCode--" title="class or interface in java.security">hashCode</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/security/Permission.html?is-external=true" title="class or interface in java.security">Permission</a></code></dd>
</dl>
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