@register.filter
def is_in_set(value, arg):
    
    if arg.filter(pk=value.pk).count():
        return True
    else:
        return False
Testing sandboxing DiffViewerActionHook when
dataset/ETHPy150Open fp7-ofelia/ocf/optin_manager/src/python/openflow/common/utils/templatetags/ch_extras.py/is_in_set--crossover with--dataset/ETHPy150Open reviewboard/reviewboard/reviewboard/extensions/tests.py/SandboxTests.test_action_hooks_diff_viewer_hook