def __virtual__():
    return 'ifttt' if 'ifttt.trigger_event' in __salt__ else False
shows function name - help for debugging
dataset/ETHPy150Open saltstack/salt/salt/states/ifttt.py/__virtual__--crossover with--dataset/ETHPy150Open hltbra/pyhistorian/pyhistorian/suite.py/_StepTestCase.__repr__