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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 get_sorted_structure(self, key=None, reverse=False):
 """ Get a sorted copy of the structure. The parameters have the same meaning as in list.sort. By default, sites are sorted by the electronegativity of the species. Args: key: Specifies a function of one argument that is used to extract a comparison key from each list element: key=str.lower. The default value is None (compare the elements directly). reverse (bool):
 If set to True, then the list elements are sorted as if each comparison were reversed. """

        sites = sorted(self, key=key, reverse=reverse)
        return self.__class__.from_sites(sites, charge=self._charge)