{"ast_node_type":"variable","tokens":[{"end":83,"kind":"keyword","start":0,"text":"let"}]}
            let cond = self.call_intrinsic("llvm.type.test", &[], &[llfn, typeid]);
            let typeid = self.get_metadata_value(typeid_metadata);
            let bb_pass = self.append_sibling_block("type_test.pass");