{"ast_node_type":"other","tokens":[{"end":91,"kind":"keyword","start":0,"text":"Rvalue::Aggregate(..)"}]}
            Rvalue::Aggregate(..) => return self.simplify_aggregate(lhs, rvalue, location),
            Rvalue::NullaryOp(op, ty) => Value::NullaryOp(op, ty),
            Rvalue::Ref(_, borrow_kind, ref mut place) => {