ExImpl extends InlineBaseImpl implements Ex { @Override public List<? extends Node> getChildren() { return Collections.emptyList(); } ExImpl(Id id);  ExImpl(Element element); @Override List<? extends Node> getChildren(); String getPlainText(); Rid getRid(); void setRid(Rid rid);  }
@Test public void testGetChildren() { ExImpl ex = createDefaultEx(); assertEquals(new ArrayList<Node>(), ex.getChildren()); }