Bug 190061 [Metadata] Update @since tags for new API
Patch to follow
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/ViewerLabel.java
* @return {@link String} or <code>null</code> if the tool tip text was
	 *         never set.
	 * 
	 * @since 3.3
	 */
	public String getTooltipText() {
		return tooltipText;
	}
	/**
	 * Set the tool tip text.
	 * 
	 * @param tooltipText
	 *            The tooltipText {@link String} to set. This value should not
	 *            be <code>null</code>.
	 * 
	 * @since 3.3
	 */
	public void setTooltipText(String tooltipText) {
		this.tooltipText = tooltipText;
	}
	/**
	 * Return whether or not the tool tip text has been set.
	 * 
	 * @return <code>boolean</code>. <code>true</code> if the tool tip text
	 *         has been set.
	 * 
	 * @since 3.3
	 */
	public boolean hasNewTooltipText() {
		return this.tooltipText != null;