an> <span class="keyword">void</span> <span class="identifier">Update</span>(
	<span class="identifier">string</span> <span class="parameter">shortKey</span>,
	<span class="identifier">Action</span>&lt;TBag&gt; <span class="parameter">partialUpdate</span>,
	<span class="identifier">Nullable</span>&lt;<span class="identifier">TimeSpan</span>&gt; <span class="parameter">expiry</span>
)</pre></div><div id="ID0EBCA_code_Div2" class="codeSnippetContainerCode" style="display: none"><pre xml:space="preserve"><span