/** @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object) */ @SuppressWarnings("unchecked") public Object getParent(final Object element) { if (element instanceof IFile) { return null; } else if (element instanceof SimpleTree) { final SimpleTree<Object> treeData = (SimpleTree<Object>) element; return treeData.getParent(); } else { return null; } }