NSException categories documentation
ETException
NSException (ETException)Default
- + (void) enableEtoileExceptions
Enable resumable and restartable exception handling. This only needs to be called once; subsequent calls will have no effect. If it is not called, then [NSException raise] will have the default behaviour.
Note: The OS X implementation of NSException does not conform to the documented behaviour. Resumable and restartable exceptions are not supported when using Apple's Foundation framework, unless exceptions are raised by creating an NSException object and then sending it a -raise message.