code: public static OutputStream leftShift(OutputStream self, byte[] value) throws IOException {
          self.write(value);
          self.flush();
          return self;
      }
docs: Overloads the leftShift operator to provide an append mechanism to add bytes to a stream.
  
  @param self  an OutputStream
  @param value a value to append
  @return an OutputStream
  @throws IOException if an I/O error occurs.
  @since 1.0