@Override
    public void removeSelectionChangedListener(ISelectionChangedListener listener)
    {
        if (selectionListeners != null) {
            selectionListeners.remove(listener);
        }
    }
@see org.eclipse.ui.part.EditorPart#doSaveAs()
plugins/org.jkiss.dbeaver.ui.editors.hex/src/org/jkiss/dbeaver/ui/editors/binary/BinaryEditor.java