val-capt_exp_of_typ" class="anchor"></a><code><span class="keyword">val</span> capt_exp_of_typ : <span><span>(<span class="type-var">'context</span>, unit, <span class="type-var">_</span>, <span class="type-var">'arg_payload</span>)</span> <a href="../index.html#type-name_matcher">name_matcher</a></span> <span>&#45;&gt;</span> <span><span>(<span class="type-var">'context</span>, <a href="../../IR/Exp/index.html#type-t">IR.Exp.t</a>, <span class="type-var">'wrapped_arg</span>, <span class="type-var">'w