Method MakeCall

eval/eval/function_step_test.cc:155–161

  }

  static CallExpr MakeCall() {
    CallExpr call;
    call.set_function("Sink");
    call.mutable_args().emplace_back();
    call.set_target(nullptr);
    return call;
  }

  absl::Status Evaluate(absl::Span<const CelValue> args, CelValue* result,
                        google::protobuf::Arena* arena) const override {