apply the transformation
        
        Args:
            structure (Structure): structure to add site properties to

def apply_transformation(self, structure):
        """
        apply the transformation
        
        Args:
            structure (Structure): structure to add site properties to
        """
        new_structure = structure.copy()
        for prop in self.site_properties.keys():
            new_structure.add_site_property(prop, self.site_properties[prop])
        return new_structure