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
getShell().addListener(SWT.Close, this);
				
				control.addListener(SWT.MouseDoubleClick, this);
				control.addListener(SWT.MouseDown, this);
				control.addListener(SWT.Dispose, this);
				control.addListener(SWT.FocusOut, this);
				
				Shell controlShell = control.getShell();
				controlShell.addListener(SWT.Move, this);
				controlShell.addListener(SWT.Resize, this);
			}
			
			void removeListeners() {
				if (isValid()) {
					proposalTable.removeListener(SWT.FocusOut, this);
					ScrollBar scrollbar = proposalTable.getVerticalBar();
					if (scrollbar != null) {
						scrollbar.removeListener(SWT.Selection, this);
					}
					getShell().removeListener(SWT.Deactivate, this);
					getShell().removeListener(SWT.Close, this);
				}
				if (control != null && !control.isDisposed()) {
					control.removeListener(SWT.MouseDoubleClick, this);
					control.removeListener(SWT.MouseDown, this);
					control.removeListener(SWT.Dispose, this);
					control.removeListener(SWT.FocusOut, this);
					Shell controlShell = control.getShell();
					controlShell.removeListener(SWT.Move, this);
					controlShell.removeListener(SWT.Resize, this);