'Helper method to convert a list of requested network tuples into an
objects.NetworkRequestList.
:param requested_networks: List of requested networks.
:return: objects.NetworkRequestList instance'

@staticmethod
def _requested_nets_as_obj_list(requested_networks):

    if (requested_networks and (not isinstance(requested_networks, objects.NetworkRequestList))):
        requested_networks = objects.NetworkRequestList.from_tuples(requested_networks)
    return requested_networks
