Standard library for converting an object providing operator << to std :: string

I just noticed that I am using the following code in my C ++ 11 application (which works quietly):

template <typename T>
std::string output_streamable_to_string(T const& kObject) {
  std::ostringstream os;
  os << kObject;

  return os.str();
}

      

        
        
        
      

    

So my question is, is there a function in the standard library ( std

) that provides this functionality?

I know it std::to_string

exists, but only works with standard library data types. I want to convert a boost::asio::ip::udp::endpoint

to std::string

. Since boost::asio::ip::udp::endpoint

only provides a function operator<<

, I need to convert std::ostream

to std::string

.