_Unref">FTC_Node_Unref</a> to &lsquo;release&rsquo; it.</p>
<p>If &lsquo;anode&rsquo; is NULL, the cache node is left unchanged, which means that the bitmap could be flushed out of the cache on the next call to one of the caching sub-system APIs. Don't assume that it is persistent!</p>
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