}
@SuppressWarnings("unchecked")
public Command createManageSourcesCommand() {
CompoundCommand compoundCmd = new CompoundCommand(ACTION_ID);
ManageSourcesCommand manageSourcesCmd = new ManageSourcesCommand();
manageSourcesCmd.setMusicDiagram(MusicPlugin.getDefault().getActiveDiagram());
manageSourcesCmd.setPostList((List<SourceBindingWrapper>) Display.getCurrent().getData(StringConstants.MUSIC_DIAGRAM_DIRTY));
manageSourcesCmd.setPreList(MusicPlugin.getDefault().getActiveDiagram().getSourceList());
compoundCmd.add(manageSourcesCmd);
return compoundCmd;
}