Bug 4369 F2 should work even if "Hide Text Hover" is enabled
- enable "Hide Text Hover" - position the cursor on a type - press F2 observe: nothing happens although I explicitly requested JavaDoc help.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitEditor.java
if (dialog.open() == Dialog.CANCEL) {
			if (progressMonitor != null)
				progressMonitor.setCanceled(true);
			return;
		}
			
		IPath filePath= dialog.getResult();
		if (filePath == null) {
			if (progressMonitor != null)
				progressMonitor.setCanceled(true);
			return;
		}
			
		filePath= filePath.removeTrailingSeparator();
		final String fileName= filePath.lastSegment();
		IPath folderPath= filePath.removeLastSegments(1);
		if (folderPath == null) {
			if (progressMonitor != null)
				progressMonitor.setCanceled(true);			
			return;
		}
		
		IWorkspaceRoot root= ResourcesPlugin.getWorkspace().getRoot();
		
		/*
		 * 1GF7WG9: ITPJUI:ALL - EXCEPTION: "Save As..." always fails
		 */
		final IPackageFragment fragment= getPackage(root, folderPath);
		
		IFile file= root.getFile(filePath);