code: public void set(final byte[] utf8, final int start, final int len) {
  		setCapacity(len, false);
  		System.arraycopy(utf8, start, bytes, 0, len);
  		this.length = len;
  		this.hash = 0;
  	}
docs: Set the Text to range of bytes
  
  @param utf8
  the data to copy from
  @param start
  the first position of the new string
  @param len
  the number of bytes of the new string