{"ast_node_type":"variable","tokens":[{"end":79,"kind":"keyword","start":0,"text":"&&"}]}
                            && let FnKind::Fn(_, _, ast::Fn { sig, .. }) = kind
                            && let Some((kind, _span)) = self.diag_metadata.current_function
                            && let ast::FnRetTy::Ty(ret_ty) = &sig.decl.output