An NSString object containing the name, IANA or otherwise, of a text encoding to be used; mutually exclusive with NSCharacterEncodingDocumentAttribute.
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)