The hook operates in background. If the hook returns then the hook operation is
completed. The caller reclaims ownership of the task. The thread may be used to
continue execution of the task and to complete the task.
The hook operates in background. The hook will use its own thread for execution.
After the hook is done with executing it will "return" control to the next handler
in the task handler stack.
The ownership of the task remains inside the hook. The thread returned from the
hook method must be used only to return back to the caller (e.g. GUI) and inform
him that the task was switched to background.
Returns the enum constant of this class with the specified name.
The string must match exactly an identifier used to declare an
enum constant in this class. (Extraneous whitespace characters are
not permitted.)
Parameters:
name - the name of the enum constant to be returned.