Class used to represent the acceptable values of the "maskShape"
parameter of the "MedianFilter" operation. Acceptable values for the
"maskShape" parameter are defined in the MedianFilterDescriptor
by the constants MEDIAN_MASK_SQUARE,
MEDIAN_MASK_PLUS,
MEDIAN_MASK_X, and
MEDIAN_MASK_SQUARE_SEPARABLE.
since: JAI 1.1