System/Library/PrivateFrameworks/Trial.framework
TRIFileLock.h
@interface TRIFileLock : NSObject
+ (struct { unsigned char x0; })acquireLockOnPath:(id)a0 fileLockMode:(struct { unsigned char x0; })a1 blocking:(BOOL)a2 andRunBlock:(id /* block */)a3;
+ (int)_lockingFlagsFromFileLockMode:(struct { unsigned char x0; })a0;
@end