Cocoa::NSURLVolumeSupportsCaseSensitiveNamesKey returns a string and
filesystem :forKey => Cocoa::NSURLVolumeSupportsCaseSensitiveNamesKey returns hell
trying to do in ruby this (obj C):
NSError *thiserror;
id thisout;
NSURL *filesystem = [NSURL fileURLWithPath:@"/" isDirectory:true];
bool result = [filesystem getResourceValue:&thisout forKey:NSURLVolumeSupportsCaseSensitiveNamesKey error:&thiserror];