'Checks the action depends on family (conditional)'

@property
def _startOnDemand(self):

    v = self._properties.get('actionstart_on_demand')
    if (v is None):
        v = False
        for n in self._properties:
            if CONDITIONAL_FAM_RE.match(n):
                v = True
                break
    self._properties['actionstart_on_demand'] = v
    return v
