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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _set_min_level(self, handler_class, level):
 """Generic method to setLevel for handlers."""

        if self._exist_handler(handler_class):
            if not level:
                self._delete_handler(handler_class)
            else:
                self._update_handler(handler_class, level=level)
        elif level:
            self._create_handler(handler_class, level)