syntax_data: {"ast_node_type":"other","tokens":[{"end":21,"kind":"keyword","start":0,"text":"("}]}
source_snippet:                     (
context_before:                     (ty::ConstKind::Expr(_), ty::ConstKind::Expr(_)) => (true, true),
context_after:                         ty::ConstKind::Expr(ty::Expr { kind: ty::ExprKind::Binop(lhs_op), .. }),