### Question:
CanonObjectEventImpl implements CanonObjectEvent { @Override public String toString() { return "CanonObjectEventImpl{" + "cameraRef=" + cameraRef + ", objectEvent=" + objectEvent + ", baseRef=" + baseRef + '}'; } CanonObjectEventImpl(final EdsCameraRef cameraRef, final EdsObjectEvent objectEvent, final EdsBaseRef baseRef); @Override EdsCameraRef getCameraRef(); @Override EdsObjectEvent getObjectEvent(); @Override EdsBaseRef getBaseRef(); @Override String toString();  }### Answer:
@Test void toStringOk() { Assertions.assertNotNull(canonObjectEvent.toString()); }