def geometry_identifiers(self):
        """
        Look up geometries by identifier MD5

        Returns
        ---------
        identifiers: dict, identifier md5: key in self.geometry
        """
        identifiers = {mesh.identifier_md5: name
                       for name, mesh in self.geometry.items()}
        return identifiers
Look up geometries by identifier MD5

        Returns
        ---------
        identifiers: dict, identifier md5: key in self.geometry