Bug 181982 [Viewers] content provider in TreeTest should return children when getElements is called
tests/org.eclipse.ui.tests.performance/src/org/eclipse/jface/tests/performance/TreeTest.java
*/
	public void testAddTen() throws CoreException {
		doTestAdd(10, TEST_COUNT, false);
	}
	/**
	 * @throws CoreException
	 *             Test addition to the tree one element at a time.
	 */
	public void testAddFifty() throws CoreException {
		doTestAdd(50, TEST_COUNT, false);
	}
	/**
	 * @throws CoreException
	 *             Test addition to the tree one element at a time.
	 */
	public void testAddHundred() throws CoreException {
		tagIfNecessary("JFace - Add 1000 items in 10 blocks to TreeViewer",
				Dimension.ELAPSED_PROCESS);
		setDegradationComment("<a href=https://bugs.eclipse.org/bugs/show_bug.cgi?id=101853>See Bug 101853</a> ");
		doTestAdd(100, TEST_COUNT, false);
	}
	/**
	 * Run the test for one of the fast insertions.
	 * 
	 * @param count
	 * @throws CoreException
	 */
	protected void doTestAdd(final int increment, final int total,final boolean preSort)
			throws CoreException {
		openBrowser();