syntax_data: {"ast_node_type":"variable","tokens":[{"end":66,"kind":"keyword","start":0,"text":"}"}]}
source_snippet:                 } else if let hir::ExprKind::Lit(lit) = arg.kind {
context_before:                     self.overloaded_operator(expr, Box::new([arg]))
context_after:                     ExprKind::Literal { lit, neg: true }