Replicates molecule site properties (specie, coords, etc.) in the
        MoleculeGraph.

        :return:

def set_node_attributes(self):
        """
        Replicates molecule site properties (specie, coords, etc.) in the
        MoleculeGraph.

        :return:
        """

        species = {}
        coords = {}
        properties = {}
        for node in self.graph.nodes():
            species[node] = self.molecule[node].specie.symbol
            coords[node] = self.molecule[node].coords
            properties[node] = self.molecule[node].properties

        nx.set_node_attributes(self.graph, species, "specie")
        nx.set_node_attributes(self.graph, coords, "coords")
        nx.set_node_attributes(self.graph, properties, "properties")