@Override
    public String toString() {
        return "PaletteEntry for range " + v0 + ", " + v1;
    }
Constructs a palette entry for the range of values v0 &le; f &lt; v1. The return color value will be interpolated between the two specified colors.

@param v0     the lower bounds (inclusive) of the covered range of values
@param v1     the upper bounds (non-inclusive) of the covered range of value
@param color0 the color assigned to value v0
@param color1 the color assigned to value v1
src/main/java/org/apache/commons/imaging/formats/tiff/photometricinterpreters/floatingpoint/PaletteEntryForRange.java