Whether or not the image contains indexed pixel samples (sometimes called paletted samples). The value of this key is kCFBooleanTrue if the image contains them.
Available in Mac OS X v10.4 and later.
Declaration Syntax Version Information- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)