Get a dictionary of mappings between vertices and enumerated attributes.

        :return: Dictionary of mappings between vertices and enumerated attributes.

def get_attribute_mappings(self):
        """Get a dictionary of mappings between vertices and enumerated attributes.

        :return: Dictionary of mappings between vertices and enumerated attributes.
        """
        att_ind_start = len(self.graph.vs)
        att_mappings = defaultdict(list)
        att_ind_end = self._add_differential_expression_attributes(att_ind_start, att_mappings)
        if "associated_diseases" in self.graph.vs.attributes():
            self._add_disease_association_attributes(att_ind_end, att_mappings)
        return att_mappings