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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 flatten_all_paths(self, group_filter=lambda x: True, path_filter=lambda x: True, path_conversions=CONVERSIONS):
 """Forward the tree of this document into the more general flatten_all_paths function and return the result."""

        return flatten_all_paths(self.tree.getroot(), group_filter,
                                 path_filter, path_conversions)