date_enum_map_exn : <span><a href="../../ATDGenerated/Clang_ast_t/index.html#type-pointer">ATDGenerated.Clang_ast_t.pointer</a> <span class="arrow">&#45;&gt;</span></span> <span><a href="../../IR/Exp/index.html#type-t">IR.Exp.t</a> <span class="arrow">&#45;&gt;</span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-add_enum_constant"><a href="#val-add_enum_constant" class="anchor"></a><code><span><span class="keyword">val</span> add_enum_constant : 
  <sp