def rdf_nx_lastmod(request, *args, **kwargs):
    '''Helper method to most recent of RDF *or* Network graph files last-modified
    information, for use with :meth:`django.views.decorators.http.last_modifie`'''
    return max(rdf_data_lastmodified(), network_data_lastmodified())
def rdf_lastmod(request, *args, **kwargs):
    '''Helper method to return RDF last-modified information, for use with
    :meth:`django.views.decorators.http.last_modified`'''
    return rdf_data_lastmodified()
def rdf_lastmod(request, *args, **kwargs):
    return rdf_data_lastmodified()
def rdf_nx_lastmod(request, *args, **kwargs):
    return max(rdf_data_lastmodified(), network_data_lastmodified())
def rdf_lastmodified(request, *args, **kwargs):
    # NOTE: last-modified would be good here, but probably should be based
    # on profile picture modification dates, which is not currently stored
    return rdf_data_lastmodified()