'**SUMMARY**
Returns true if this image uses the HLS colorspace.
**RETURNS**
True if the image uses the HLS colorspace, False otherwise.
**EXAMPLE**
>>> if( img.isHLS() ):
>>>    h,l,s = img.splitChannels()
**SEE ALSO**
:py:meth:`toHLS`'

def isHLS(self):

    return (self._colorSpace == ColorSpace.HLS)
