n> <a href="../ATDGenerated/Clang_ast_t/index.html#type-decl">ATDGenerated.Clang_ast_t.decl</a></code></dt><dt class="spec value" id="val-update_type_decl_tuple"><a href="#val-update_type_decl_tuple" class="anchor"></a><code><span class="keyword">val</span> update_type_decl_tuple : <span>(<span>(<a href="../ATDGenerated/Clang_ast_t/index.html#type-decl_info">ATDGenerated.Clang_ast_t.decl_info</a> * <a href="../ATDGenerated/Clang_ast_t/index.html#type-named_decl_info">ATDGenerated.Clang_ast_t.named_decl_info