@staticmethod
def _close_data_layers(data_layers):
    """Close all data layers with exclusion h5 handlers.

        Parameters
        ----------
        data_layers : None | dict
            Aggregation data layers. Must have fobj exclusion handlers to close
        """
    if data_layers is not None:
        for layer in data_layers.values():
            if 'fobj' in layer:
                layer['fobj'].close()
