+ final DOMDataTreeChangeListener domDataTreeChangeListener = mock(DOMDataTreeChangeListener.class);
+ final ListenerRegistration listenerRegistration = mock(ListenerRegistration.class);
+ doReturn(listenerRegistration).when(domDataTreeShard).registerTreeChangeListener(any(), any());
+ doNothing().when(domDataTreeChangeListener).onDataTreeChanged(any());
+ inMemoryDOMDataTreeShard.registerTreeChangeListener(YangInstanceIdentifier.EMPTY, domDataTreeChangeListener);
+ verify(domDataTreeShard, atLeastOnce()).registerTreeChangeListener(any(), any());
+