A string identifying the registry in which the condition designated by kCGPDFXOutputConditionIdentifier is defined. This key is optional. If present, the value of this key must be a CFString object. For best results, the string should be lossless in ASCII encoding.
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)