### Question:
CanonPropertyEventImpl implements CanonPropertyEvent { @Override public String toString() { return "CanonPropertyEventImpl{" + "cameraRef=" + cameraRef + ", propertyEvent=" + propertyEvent + ", propertyID=" + propertyID + ", inParam=" + inParam + '}'; } CanonPropertyEventImpl(final EdsCameraRef cameraRef, final EdsPropertyEvent propertyEvent, final EdsPropertyID propertyID, final long inParam); @Override EdsCameraRef getCameraRef(); @Override EdsPropertyEvent getPropertyEvent(); @Override EdsPropertyID getPropertyId(); @Override long getInParam(); @Override String toString();  }### Answer:
@Test void toStringOk() { Assertions.assertNotNull(canonPropertyEvent.toString()); }