<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def current_task(self, args):
 """Name of current action for progress-bar output. The specific task string is depends on the configuration via `args`. Returns ------- ctask : str String representation of this task. """

        ctask = self.nice_name if self.nice_name is not None else self.name
        if args is not None:
            if args.update:
                ctask = ctask.replace('%pre', 'Updating')
            else:
                ctask = ctask.replace('%pre', 'Loading')
        return ctask