private final void slowRepeat(int rep_start, int len, int dist)
private void slowRepeat(int rep_start, int len, int dist)
  private final void slowRepeat(int rep_start, int len, int dist)  {    while (len-- > 0)      {	window[window_end++] = window[rep_start++];	window_end &= WINDOW_MASK;	rep_start &= WINDOW_MASK;      }  }