</a> â€“ <a href="../../index.html">infer</a> &#x00BB; <a href="../index.html">OpenSource</a> &#x00BB; FbThreadSafety</nav><header class="odoc-preamble"><h1>Module <code><span>OpenSource.FbThreadSafety</span></code></h1></header><div class="odoc-content"><div class="odoc-spec"><div class="spec value anchored" id="val-is_custom_init"><a href="#val-is_custom_init" class="anchor"></a><code><span><span class="keyword">val</span> is_custom_init : <span><span class="type-var">'tenv_t</span> <span class="arro