{
    supportedTypes.add(IStructuredItemContentProvider.class);
    supportedTypes.add(ITreeItemContentProvider.class);
    supportedTypes.add(IItemPropertySource.class);
    supportedTypes.add(IEditingDomainItemProvider.class);
    supportedTypes.add(IItemLabelProvider.class);
    supportedTypes.add(ITableItemLabelProvider.class);
  }