ed to the server. 
</p>
<!-- end abstract --><!-- headerDoc=abstract;uid=//apple_ref/occ/intfm/MixpanelDelegate/mixpanelWillFlush:;name=end --></p>
<div class='declaration_indent'>
<pre><tt>@optional</tt>
<br>- (<!-- a logicalPath="//apple_ref/occ/cl/BOOL //apple_ref/occ/tdef/BOOL //apple_ref/occ/tag/BOOL //apple_ref/occ/struct/BOOL //apple_ref/occ/intf/BOOL //apple_ref/doc/anysymbol/BOOL" machineGenerated="true" --><span class="type">BOOL</span><!-- /a -->)<!-- a logicalPath="//apple_ref/occ/instm/Mixpanel