def METHOD_NAME(arg, l_opts, pc_opts, ps_opts, request):
    nst = request.getfixturevalue(arg)
    grid = nst.grid
    parcels = nst._parcels
    opts = {**l_opts, **pc_opts, **ps_opts}
    plot_network_and_parcels(grid, parcels, parcel_time_index=0, **opts)