import org.eclipse.core.resources.ISavedState; //导入依赖的package包/类
/**
 * Ensures that resource monitoring is active even if variantsync plugin is
 * not active in eclipse.
 * 
 * @throws CoreException
 *             resources could not be monitored
 */
public void registerSaveParticipant() throws CoreException {
	IWorkspace ws = ResourcesPlugin.getWorkspace();

	// Registers the given plug-in's workspace save participant, and returns
	// an object describing the workspace state at the time of the last save
	// in which the bundle participated.
	ISavedState ss = ws.addSaveParticipant(VariantSyncConstants.PLUGIN_ID,
			this);
	if (ss != null) {

		// used to receive notification of changes that might have happened
		// while VariantSyncPlugin was not active.
		ss.processResourceChangeEvents(this);
	}
	ws.removeSaveParticipant(VariantSyncConstants.PLUGIN_ID);
}
 

import org.eclipse.core.resources.ISavedState; //导入依赖的package包/类
/**
 * We register a save participant so we can get the delta from workbench
 * startup to plugin startup.
 * @throws CoreException
 */
public void registerSaveParticipant() throws CoreException {
	IWorkspace ws = ResourcesPlugin.getWorkspace();
	ISavedState ss = ws.addSaveParticipant(SVNProviderPlugin.getPlugin(), this);
	if (ss != null) {
		ss.processResourceChangeEvents(this);
	}
	ws.removeSaveParticipant(SVNProviderPlugin.getPlugin());
}
 

import org.eclipse.core.resources.ISavedState; //导入依赖的package包/类
@Override
public ISavedState addSaveParticipant(Plugin plugin, ISaveParticipant iSaveParticipant)
    throws CoreException {
  throw new UnsupportedOperationException();
}