{"ast_node_type":"other","tokens":[{"end":47,"kind":"keyword","start":0,"text":"Rvalue::NullaryOp(null_op,"}]}
            Rvalue::NullaryOp(null_op, ty) => {
            },
                let Ok(layout) = self.tcx.layout_of(self.typing_env.as_query_input(*ty)) else {