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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 run(self, visitor):
 """ Traverses this representer configuration traverser with the given visitor. :param visitor: :class:`RepresenterConfigVisitorBase` instance. """

        attr_option_map = self.__config.get_attribute_options()
        # Sorting the keys results in a depth-first traversal, which is just
        # what we want.
        for (key, key_attr_option_map) in sorted(iteritems_(attr_option_map)):
            if not self.__max_depth is None and len(key) > self.__max_depth:
                continue
            visitor.visit(key, key_attr_option_map)