def METHOD_NAME(scheduler: Scheduler):
    _fill_test_data(scheduler)
    # Regarding the test data, all scheduled transfer should be ready to send
    # except transfers for `peer1` and `peer2` because they already exists in
    # incoming and outgoing containers
    #
    # In this test we will limit amount of `max_simultaneous_transfers` by 4
    # transfers. In this case only two transfers from scheduled should be send.
    scheduler.eva.shutting_down = False
    scheduler.eva.settings.max_simultaneous_transfers = 4
    started = scheduler.send_scheduled()
    str_representation = list(_transform_to_str(scheduler.eva, started))
    assert str_representation == ['peer1_out', 'peer2_in']