syntax_data: {"ast_node_type":"other","tokens":[{"end":33,"kind":"keyword","start":0,"text":"result_value,"}]}
source_snippet:                     result_value,
context_before:                     source_info,
context_after:                     Rvalue::BinaryOp(op_with_overflow, Box::new((lhs.to_copy(), rhs.to_copy()))),