'**SUMMARY**
Returns true if this image uses the RGB colorspace.
**RETURNS**
True if the image uses the RGB colorspace, False otherwise.
**EXAMPLE**
>>> if( img.isRGB() ):
>>>    r,g,b = img.splitChannels()
**SEE ALSO**
:py:meth:`toRGB`'

def isRGB(self):

    return (self._colorSpace == ColorSpace.RGB)
