This path is not a dictionary key—it is a value indicating the separator placed between components of a pathname passed to NSJavaSetup.
Available in Mac OS X v10.0 through Mac OS X v10.5 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)