syntax_data: {"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"ExprKind::Literal"}]}
source_snippet:                     ExprKind::Literal { lit, neg: true }
context_before:                 } else if let hir::ExprKind::Lit(lit) = arg.kind {
context_after:                 } else {