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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 serialize_to_display(self, doc_format="pretty-xml", *args, **kwargs):
 """Serialize ResourceMap to an XML doc that is pretty printed for display. Args: doc_format: str One of: ``xml``, ``n3``, ``turtle``, ``nt``, ``pretty-xml``, ``trix``, ``trig`` and ``nquads``. args and kwargs: Optional arguments forwarded to rdflib.ConjunctiveGraph.serialize(). Returns: str: Pretty printed Resource Map XML doc Note: Only the default, "xml", is automatically indexed by DataONE. """

        return (
            super(ResourceMap, self)
            .serialize(format=doc_format, encoding=None, *args, **kwargs)
            .decode("utf-8")
        )