Method signatures

bolt/expression/tests/ExprTest.cpp:2073–2081

  }

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

BOLT_DECLARE_VECTOR_FUNCTION(