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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 ignore_whitespace_text_nodes(cls, wrapped_node):
 """ Find and delete any text nodes containing nothing but whitespace in in the given node and its descendents. This is useful for cleaning up excess low-value text nodes in a document DOM after parsing a pretty-printed XML document. """

        for child in wrapped_node.children:
            if child.is_text and child.value.strip() == '':
                child.delete()
            else:
                cls.ignore_whitespace_text_nodes(child)