Bug 283551 [FieldAssist] ContentProposalAdapter Class-JavaDoc and Method-JavaDoc contradict each other
The class documentation says: --8<-- This class is not intended to be subclassed. --8<-- But there are methods like openProposalPopup, closeProposalPopup who state something like this: --8<-- This method is used by subclasses to explicitly invoke the opening of the popup. If there are no proposals to show, the popup will not open and a beep will be sounded. --8<-- So did we opened the class since its first release but forgot to update the JavaDoc of the class?
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/ContentProposalAdapter.java
return JFaceResources.getColorRegistry().get(
					JFacePreferences.CONTENT_ASSIST_FOREGROUND_COLOR);
		}
		
		/*
		 * (non-Javadoc)
		 * @see org.eclipse.jface.dialogs.PopupDialog#getBackground()
		 */
		protected Color getBackground() {
			return JFaceResources.getColorRegistry().get(
					JFacePreferences.CONTENT_ASSIST_BACKGROUND_COLOR);
		}
		/*
		 * Creates the content area for the proposal popup. This creates a table
		 * and places it inside the composite. The table will contain a list of
		 * all the proposals.
		 * 
		 * @param parent The parent composite to contain the dialog area; must
		 * not be <code>null</code>.
		 */
		protected final Control createDialogArea(final Composite parent) {
			
			if (USE_VIRTUAL) {
				proposalTable = new Table(parent, SWT.H_SCROLL | SWT.V_SCROLL
						| SWT.VIRTUAL);
				Listener listener = new Listener() {
					public void handleEvent(Event event) {
						handleSetData(event);
					}
				};