Bug 81196 Can't search for References, ... to an ITypeParameter [search]
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/actions/FindReferencesInWorkingSetAction.java
* 
 * <p>
 * This class may be instantiated; it is not intended to be subclassed.
 * </p>
 * 
 * @since 2.0
 */
public class FindReferencesInWorkingSetAction extends FindReferencesAction {
	private IWorkingSet[] fWorkingSets;
	
	/**
	 * Creates a new <code>FindReferencesInWorkingSetAction</code>. The action 
	 * requires that the selection provided by the site's selection provider is of type 
	 * <code>org.eclipse.jface.viewers.IStructuredSelection</code>. The user will 
	 * be prompted to select the working sets.
	 * 
	 * @param site the site providing context information for this action
	 */
	public FindReferencesInWorkingSetAction(IWorkbenchSite site) {
		super(site);
		init();
		PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.FIND_REFERENCES_IN_WORKING_SET_ACTION);
	}
	/**
	 * Creates a new <code>FindReferencesInWorkingSetAction</code>. The action 
	 * requires that the selection provided by the site's selection provider is of type 
	 * <code>org.eclipse.jface.viewers.IStructuredSelection</code>.
	 * 
	 * @param site			the site providing context information for this action
	 * @param workingSets	the working sets to be used in the search