ReferenceAvailablecancelPublic method `telion_api.CancellableOperation.cancel(self) -> 'bool'`.Public method telion_api.CancellableOperation.cancel(self) -> 'bool'. Contract PropertyValuesymboltelion_api.CancellableOperation.cancelsignature(self) -> 'bool'returnbool Signature telion_api.CancellableOperation.cancel(self) -> 'bool'