code: public static OutputStream leftShift(Socket self, byte[] value) throws IOException {
          return IOGroovyMethods.leftShift(self.getOutputStream(), value);
      }
docs: Overloads the left shift operator to provide an append mechanism
  to add bytes to the output stream of a socket
  
  @param self  a Socket
  @param value a value to append
  @return an OutputStream
  @throws IOException if an IOException occurs.
  @since 1.0