{"ast_node_type":"variable","tokens":[{"end":91,"kind":"keyword","start":0,"text":"&&"}]}
                            && let self_ty = self.infcx.instantiate_binder_with_fresh_vars(
                            && let ty::Ref(_, _, hir::Mutability::Mut) = args.type_at(0).kind()
                                fn_call_span,