@classmethod
def print_forest(cls, root_node, detailed=False, file=None, show_scores=
    False, show_ids=False, visit_all=True, skip_duplicates=False):
    """ Print a parse forest to the given file, or stdout if none """
    cls(detailed, file, show_scores, show_ids, visit_all, skip_duplicates=
        skip_duplicates).go(root_node)
