Method signatures

bolt/expression/tests/ExprTest.cpp:826–832

  }

  static std::vector<std::shared_ptr<exec::FunctionSignature>> signatures() {
    // integer -> integer
    return {exec::FunctionSignatureBuilder()
                .returnType("integer")
                .argumentType("integer")
                .build()};
  }

 private:
  const int32_t addition_;