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<h2><span class="refentrytitle"><a name="GDataAccessHandler.top_of_page"></a>GDataAccessHandler</span></h2>
<p>GDataAccessHandler — GData access handler interface</p>
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<td class="gallery_image" valign="top" align="right"></td>
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<div class="refsect1">
<a name="GDataAccessHandler.stability-level"></a><h2>Stability Level</h2>
<acronym title="The intention of a Stable interface is to enable arbitrary third parties to
develop applications to these interfaces, release them, and have confidence that
they will run on all minor releases of the product (after the one in which the
interface was introduced, and within the same major release). Even at a major
release, incompatible changes are expected to be rare, and to have strong
justifications.
"><span class="acronym">Stable</span></acronym>, unless otherwise indicated
</div>
<div class="refsect1">
<a name="GDataAccessHandler.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a class="link" href="GDataFeed.html" title="GDataFeed"><span class="returnvalue">GDataFeed</span></a> *
</td>
<td class="function_name">
<a class="link" href="GDataAccessHandler.html#gdata-access-handler-get-rules" title="gdata_access_handler_get_rules ()">gdata_access_handler_get_rules</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GDataAccessHandler.html#gdata-access-handler-get-rules-async" title="gdata_access_handler_get_rules_async ()">gdata_access_handler_get_rules_async</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GDataAccessHandler.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="GDataAccessHandler.html#GDATA-LINK-ACCESS-CONTROL-LIST:CAPS" title="GDATA_LINK_ACCESS_CONTROL_LIST">GDATA_LINK_ACCESS_CONTROL_LIST</a></td>
</tr>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="GDataAccessHandler.html#GDataAccessHandler-struct" title="GDataAccessHandler">GDataAccessHandler</a></td>
</tr>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="GDataAccessHandler.html#GDataAccessHandlerIface" title="GDataAccessHandlerIface">GDataAccessHandlerIface</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GDataAccessHandler.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen"> <a href="/opt/gnome/install/share/gtk-doc/html/gobject/GTypeModule.html">GInterface</a>
<span class="lineart">╰──</span> GDataAccessHandler
</pre>
</div>
<div class="refsect1">
<a name="GDataAccessHandler.prerequisites"></a><h2>Prerequisites</h2>
<p>
GDataAccessHandler requires
<a class="link" href="GDataEntry.html" title="GDataEntry">GDataEntry</a>.</p>
</div>
<div class="refsect1">
<a name="GDataAccessHandler.implementations"></a><h2>Known Implementations</h2>
<p>
GDataAccessHandler is implemented by
<a class="link" href="GDataCalendarCalendar.html" title="GDataCalendarCalendar">GDataCalendarCalendar</a>, <a class="link" href="GDataDocumentsDocument.html" title="GDataDocumentsDocument">GDataDocumentsDocument</a>, <a class="link" href="GDataDocumentsDrawing.html" title="GDataDocumentsDrawing">GDataDocumentsDrawing</a>, <a class="link" href="GDataDocumentsEntry.html" title="GDataDocumentsEntry">GDataDocumentsEntry</a>, <a class="link" href="GDataDocumentsFolder.html" title="GDataDocumentsFolder">GDataDocumentsFolder</a>, <a class="link" href="GDataDocumentsPdf.html" title="GDataDocumentsPdf">GDataDocumentsPdf</a>, <a class="link" href="GDataDocumentsPresentation.html" title="GDataDocumentsPresentation">GDataDocumentsPresentation</a>, <a class="link" href="GDataDocumentsSpreadsheet.html" title="GDataDocumentsSpreadsheet">GDataDocumentsSpreadsheet</a> and <a class="link" href="GDataDocumentsText.html" title="GDataDocumentsText">GDataDocumentsText</a>.</p>
</div>
<div class="refsect1">
<a name="GDataAccessHandler.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include <gdata/gdata-access-handler.h>
</pre>
</div>
<div class="refsect1">
<a name="GDataAccessHandler.description"></a><h2>Description</h2>
<p><a class="link" href="GDataAccessHandler.html" title="GDataAccessHandler"><span class="type">GDataAccessHandler</span></a> is an interface which can be implemented by <a class="link" href="GDataEntry.html" title="GDataEntry"><span class="type">GDataEntry</span></a>s which can have their permissions controlled by an
access control list (ACL). It has a set of methods which allow the <a class="link" href="GDataAccessRule.html" title="GDataAccessRule"><span class="type">GDataAccessRule</span></a>s for the access handler/entry to be retrieved,
added, modified and deleted, with immediate effect.</p>
<p>For an example of inserting an access rule into an ACL, see the documentation for <a class="link" href="GDataAccessRule.html" title="GDataAccessRule"><span class="type">GDataAccessRule</span></a>.</p>
<p>When implementing the interface, classes must implement an <code class="function">is_owner_rule</code> function. It's optional to implement a
<code class="function">get_authorization_domain</code> function, but if it's not implemented, any operations on the access handler's
<a class="link" href="GDataAccessRule.html" title="GDataAccessRule"><span class="type">GDataAccessRule</span></a>s will be performed unauthorized (i.e. as if by a non-logged-in user). This will not usually work.</p>
</div>
<div class="refsect1">
<a name="GDataAccessHandler.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="gdata-access-handler-get-rules"></a><h3>gdata_access_handler_get_rules ()</h3>
<pre class="programlisting"><a class="link" href="GDataFeed.html" title="GDataFeed"><span class="returnvalue">GDataFeed</span></a> *
gdata_access_handler_get_rules (<em class="parameter"><code><a class="link" href="GDataAccessHandler.html" title="GDataAccessHandler"><span class="type">GDataAccessHandler</span></a> *self</code></em>,
<em class="parameter"><code><a class="link" href="GDataService.html" title="GDataService"><span class="type">GDataService</span></a> *service</code></em>,
<em class="parameter"><code><span class="type">GCancellable</span> *cancellable</code></em>,
<em class="parameter"><code><a class="link" href="GDataService.html#GDataQueryProgressCallback" title="GDataQueryProgressCallback ()"><span class="type">GDataQueryProgressCallback</span></a> progress_callback</code></em>,
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> progress_user_data</code></em>,
<em class="parameter"><code><a href="../glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Retrieves a <a class="link" href="GDataFeed.html" title="GDataFeed"><span class="type">GDataFeed</span></a> containing all the access rules which apply to the given <a class="link" href="GDataAccessHandler.html" title="GDataAccessHandler"><span class="type">GDataAccessHandler</span></a>. Only the owner of a <a class="link" href="GDataAccessHandler.html" title="GDataAccessHandler"><span class="type">GDataAccessHandler</span></a> may
view its rule feed.</p>
<p>If <em class="parameter"><code>cancellable</code></em>
is not <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, then the operation can be cancelled by triggering the <em class="parameter"><code>cancellable</code></em>
object from another thread.
If the operation was cancelled, the error <code class="literal">G_IO_ERROR_CANCELLED</code> will be returned.</p>
<p>A <a class="link" href="GDataService.html#GDATA-SERVICE-ERROR-PROTOCOL-ERROR:CAPS"><code class="literal">GDATA_SERVICE_ERROR_PROTOCOL_ERROR</code></a> will be returned if the server indicates there is a problem with the query.</p>
<p>For each rule in the response feed, <em class="parameter"><code>progress_callback</code></em>
will be called in the main thread. If there was an error parsing the XML response,
a <a class="link" href="GDataService.html#GDataParserError" title="enum GDataParserError"><span class="type">GDataParserError</span></a> will be returned.</p>
<div class="refsect3">
<a name="gdata-access-handler-get-rules.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>self</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataAccessHandler.html" title="GDataAccessHandler"><span class="type">GDataAccessHandler</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>service</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataService.html" title="GDataService"><span class="type">GDataService</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p>optional <span class="type">GCancellable</span> object, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>progress_callback</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataService.html#GDataQueryProgressCallback" title="GDataQueryProgressCallback ()"><span class="type">GDataQueryProgressCallback</span></a> to call when a rule is loaded, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>][<acronym title="The callback is valid only during the call to the method."><span class="acronym">scope call</span></acronym>][<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym> progress_user_data]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>progress_user_data</p></td>
<td class="parameter_description"><p>data to pass to the <em class="parameter"><code>progress_callback</code></em>
function. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>a <a href="../glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a>, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdata-access-handler-get-rules.returns"></a><h4>Returns</h4>
<p>a <a class="link" href="GDataFeed.html" title="GDataFeed"><span class="type">GDataFeed</span></a> of access control rules, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>; unref with <a href="../gobject/gobject-The-Base-Object-Type.html#g-object-unref"><code class="function">g_object_unref()</code></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="ix05.html#api-index-0.3.0">0.3.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdata-access-handler-get-rules-async"></a><h3>gdata_access_handler_get_rules_async ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gdata_access_handler_get_rules_async (<em class="parameter"><code><a class="link" href="GDataAccessHandler.html" title="GDataAccessHandler"><span class="type">GDataAccessHandler</span></a> *self</code></em>,
<em class="parameter"><code><a class="link" href="GDataService.html" title="GDataService"><span class="type">GDataService</span></a> *service</code></em>,
<em class="parameter"><code><span class="type">GCancellable</span> *cancellable</code></em>,
<em class="parameter"><code><a class="link" href="GDataService.html#GDataQueryProgressCallback" title="GDataQueryProgressCallback ()"><span class="type">GDataQueryProgressCallback</span></a> progress_callback</code></em>,
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> progress_user_data</code></em>,
<em class="parameter"><code><a href="../glib/glib-Datasets.html#GDestroyNotify"><span class="type">GDestroyNotify</span></a> destroy_progress_user_data</code></em>,
<em class="parameter"><code><span class="type">GAsyncReadyCallback</span> callback</code></em>,
<em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>Retrieves a <a class="link" href="GDataFeed.html" title="GDataFeed"><span class="type">GDataFeed</span></a> containing all the access rules which apply to the given <a class="link" href="GDataAccessHandler.html" title="GDataAccessHandler"><span class="type">GDataAccessHandler</span></a>. Only the owner of a <a class="link" href="GDataAccessHandler.html" title="GDataAccessHandler"><span class="type">GDataAccessHandler</span></a> may
view its rule feed. <em class="parameter"><code>self</code></em>
and <em class="parameter"><code>service</code></em>
are both reffed when this function is called, so can safely be unreffed after this function returns.</p>
<p>For more details, see <a class="link" href="GDataAccessHandler.html#gdata-access-handler-get-rules" title="gdata_access_handler_get_rules ()"><code class="function">gdata_access_handler_get_rules()</code></a>, which is the synchronous version of this function, and <a class="link" href="GDataService.html#gdata-service-query-async" title="gdata_service_query_async ()"><code class="function">gdata_service_query_async()</code></a>, which
is the base asynchronous query function.</p>
<p>When the operation is finished, <em class="parameter"><code>callback</code></em>
will be called. You can then call <a class="link" href="GDataService.html#gdata-service-query-finish" title="gdata_service_query_finish ()"><code class="function">gdata_service_query_finish()</code></a>
to get the results of the operation.</p>
<div class="refsect3">
<a name="gdata-access-handler-get-rules-async.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>self</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataAccessHandler.html" title="GDataAccessHandler"><span class="type">GDataAccessHandler</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>service</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataService.html" title="GDataService"><span class="type">GDataService</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p>optional <span class="type">GCancellable</span> object, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>progress_callback</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataService.html#GDataQueryProgressCallback" title="GDataQueryProgressCallback ()"><span class="type">GDataQueryProgressCallback</span></a> to call when a rule is loaded, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>][<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym> progress_user_data]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>progress_user_data</p></td>
<td class="parameter_description"><p>data to pass to the <em class="parameter"><code>progress_callback</code></em>
function. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>destroy_progress_user_data</p></td>
<td class="parameter_description"><p>the function to call when <em class="parameter"><code>progress_callback</code></em>
will not be called any more, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. This function will be
called with <em class="parameter"><code>progress_user_data</code></em>
as a parameter and can be used to free any memory allocated for it. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>callback</p></td>
<td class="parameter_description"><p>a <span class="type">GAsyncReadyCallback</span> to call when the query is finished</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>data to pass to the <em class="parameter"><code>callback</code></em>
function. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="ix12.html#api-index-0.9.1">0.9.1</a></p>
</div>
</div>
<div class="refsect1">
<a name="GDataAccessHandler.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GDATA-LINK-ACCESS-CONTROL-LIST:CAPS"></a><h3>GDATA_LINK_ACCESS_CONTROL_LIST</h3>
<pre class="programlisting">#define GDATA_LINK_ACCESS_CONTROL_LIST "http://schemas.google.com/acl/2007#accessControlList"
</pre>
<p>The relation type URI of the access control list location for this resource.</p>
<p>For more information, see the</p>
<a class="ulink" href="http://code.google.com/apis/calendar/data/2.0/developers_guide_protocol.html#SharingACalendar" target="_top">ACL specification</a>.
<p class="since">Since: <a class="link" href="ix09.html#api-index-0.7.0">0.7.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="GDataAccessHandler-struct"></a><h3>GDataAccessHandler</h3>
<pre class="programlisting">typedef struct _GDataAccessHandler GDataAccessHandler;</pre>
<p>All the fields in the <a class="link" href="GDataAccessHandler.html" title="GDataAccessHandler"><span class="type">GDataAccessHandler</span></a> structure are private and should never be accessed directly.</p>
<p class="since">Since: <a class="link" href="ix05.html#api-index-0.3.0">0.3.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="GDataAccessHandlerIface"></a><h3>GDataAccessHandlerIface</h3>
<pre class="programlisting">typedef struct {
GTypeInterface parent;
gboolean (*is_owner_rule) (GDataAccessRule *rule);
GDataAuthorizationDomain *(*get_authorization_domain) (GDataAccessHandler *self);
GDataFeed *(*get_rules) (GDataAccessHandler *self,
GDataService *service,
GCancellable *cancellable,
GDataQueryProgressCallback progress_callback,
gpointer progress_user_data,
GError **error);
} GDataAccessHandlerIface;
</pre>
<p>The class structure for the <a class="link" href="GDataAccessHandler.html" title="GDataAccessHandler"><span class="type">GDataAccessHandler</span></a> interface.</p>
<div class="refsect3">
<a name="GDataAccessHandlerIface.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="struct_members_name">
<col class="struct_members_description">
<col width="200px" class="struct_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="struct_member_name"><p><a href="../gobject/gobject-Type-Information.html#GTypeInterface"><span class="type">GTypeInterface</span></a> <em class="structfield"><code><a name="GDataAccessHandlerIface.parent"></a>parent</code></em>;</p></td>
<td class="struct_member_description"><p>the parent type</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GDataAccessHandlerIface.is-owner-rule"></a>is_owner_rule</code></em> ()</p></td>
<td class="struct_member_description"><p>a function to return whether the given <a class="link" href="GDataAccessRule.html" title="GDataAccessRule"><span class="type">GDataAccessRule</span></a> has the role of an owner (of a <a class="link" href="GDataAccessHandler.html" title="GDataAccessHandler"><span class="type">GDataAccessHandler</span></a>).</p></td>
<td class="struct_member_annotations"> </td>
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<td class="struct_member_name"><p><em class="structfield"><code><a name="GDataAccessHandlerIface.get-authorization-domain"></a>get_authorization_domain</code></em> ()</p></td>
<td class="struct_member_description"><p>a function to return the <a class="link" href="GDataAuthorizationDomain.html" title="GDataAuthorizationDomain"><span class="type">GDataAuthorizationDomain</span></a> to be used for all operations on the access rules
belonging to this access handler; not implementing this function is equivalent to returning <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> from it, which signifies that operations on the
access rules don't require authorization; new in version 0.9.0. </p></td>
<td class="struct_member_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
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<td class="struct_member_name"><p><em class="structfield"><code><a name="GDataAccessHandlerIface.get-rules"></a>get_rules</code></em> ()</p></td>
<td class="struct_member_description"><p>a function to query, parse and return a <a class="link" href="GDataFeed.html" title="GDataFeed"><span class="type">GDataFeed</span></a> of
<a href="GDataAccessRule.html#GDataAccessRule-struct"><span class="type">GDataAccessRules</span></a> for a given entry — the virtual function for
<a class="link" href="GDataAccessHandler.html#gdata-access-handler-get-rules" title="gdata_access_handler_get_rules ()"><code class="function">gdata_access_handler_get_rules()</code></a>; new in version 0.17.2. </p></td>
<td class="struct_member_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
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<p class="since">Since: <a class="link" href="ix11.html#api-index-0.9.0">0.9.0</a></p>
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