syntax_data: {"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:                 if self.typeck_results.is_method_call(expr) {
context_before:             hir::ExprKind::Unary(hir::UnOp::Deref, arg) => {
context_after:                     let arg = self.mirror_expr(arg);