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<p>This method is only available on UNIX.</p>
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<p>This method will free <em>invocation</em>, you cannot use it afterwards.</p>
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<dl class="since_2_30"><dt><b><a class="el" href="since_2_30.html#_since_2_30000011">Since glibmm 2.30:</a></b></dt><dd></dd></dl>
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<tr><td class="paramname">parameters</td><td>A Variant tuple with out parameters for the method or <code>0</code> if not passing any parameters. </td></tr>
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<tr><td class="paramname">fd_list</td><td>A <a class="el" href="classGio_1_1UnixFDList.html" title="UnixFDList - An object containing a set of UNIX file descriptors.">UnixFDList</a> or <code>0</code>. Like g_dbus_method_invocation_return_error() but without printf()-style formatting.</td></tr>