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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 draw_tree(node, child_iter=lambda n: n.children, text_str=str):
 """Support asciitree 0.2 API. This function solely exist to not break old code (using asciitree 0.2). Its use is deprecated."""

    return LeftAligned(traverse=Traversal(get_text=text_str,
                                          get_children=child_iter),
                       draw=LegacyStyle())(node)