<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def grab_hotkey(self, item):
 """ Grab a hotkey. If the hotkey has no filter regex, it is global and is grabbed recursively from the root window If it has a filter regex, iterate over all children of the root and grab from matching windows """

        if item.get_applicable_regex() is None:
            self.__enqueue(self.__grabHotkey, item.hotKey, item.modifiers, self.rootWindow)
            if self.__needsMutterWorkaround(item):
                self.__enqueue(self.__grabRecurse, item, self.rootWindow, False)
        else:
            self.__enqueue(self.__grabRecurse, item, self.rootWindow)