code: public static BoundingBox getBoundingBox(BoundingBox totalBox,
  			TileMatrix tileMatrix, TileGrid tileGrid) {
  		return getBoundingBox(totalBox, tileMatrix.getMatrixWidth(),
  				tileMatrix.getMatrixHeight(), tileGrid);
  	}
docs: Get the bounding box of the tile grid in the tile matrix using the total
  bounding box with constant units
  
  @param totalBox
  total bounding box
  @param tileMatrix
  tile matrix
  @param tileGrid
  tile grid
  @return bounding box
  @since 1.2.0