code: protected void set(final byte[] buf, final int off, final int len) {
          _skipped = new int[0];
          _skippedWriteIndex = 0;
          _bufferedString.set(buf, off, len);
      }
docs: A delegate to the underlying {@link StringBuffer}'s set() method.
  
  @param buf Buffer to operate with
  @param off Beginning of the string (offset in the buffer)
  @param len Length of the string from the offset.