code: public void fill(int minX, int minY, int maxX, int maxY, IntBiPredicate isInside, int replacement)
      {
          fill(minX, minY, maxX, maxY, isInside, (x,y)->replacement);
      }
docs: Fills clipped (minX, minY, maxX, maxY) area. Area must
  be surrounded with replacement (or clip)
  @param minX
  @param minY
  @param maxX
  @param maxY
  @param isInside
  @param replacement