Bug 38922 method getNextPage() in JavadocTreeWizardPage unnecessary [Javadoc] [Wizard]
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javadocexport/JavadocTreeWizardPage.java
ITreeContentProvider treeContentProvider= new JavadocProjectContentProvider();
		ITreeContentProvider listContentProvider= new JavadocMemberContentProvider();
		fInputGroup= new CheckboxTreeAndListGroup(c, fStore.getRoot(), treeContentProvider, new JavaElementLabelProvider(JavaElementLabelProvider.SHOW_DEFAULT), listContentProvider, new JavaElementLabelProvider(JavaElementLabelProvider.SHOW_DEFAULT), SWT.NONE, convertWidthInCharsToPixels(60), convertHeightInCharsToPixels(10));
		fInputGroup.addCheckStateListener(new ICheckStateListener() {
			public void checkStateChanged(CheckStateChangedEvent e) {
				doValidation(TREESTATUS);
				fWizard.removeAllProjects();
				setProjects();
			}
		});
		try {
			
			
			if (!fStore.getJavaProjects().isEmpty())
				setTreeChecked(fStore.getSelectedElements(), (IJavaProject) fStore.getJavaProjects().get(0));
		} catch (JavaModelException e) {
			JavaPlugin.log(e);
		}
		fInputGroup.aboutToOpen();
	}
	private void createVisibilitySet(Composite composite) {
		GridLayout visibilityLayout= createGridLayout(4);
		visibilityLayout.marginHeight= 0;
		visibilityLayout.marginWidth= 0;
		Composite visibilityGroup= new Composite(composite, SWT.NONE);
		visibilityGroup.setLayoutData(createGridData(GridData.FILL_HORIZONTAL, 6, 0));
		visibilityGroup.setLayout(visibilityLayout);
		createLabel(visibilityGroup, SWT.NONE, JavadocExportMessages.getString("JavadocTreeWizardPage.visibilitygroup.label"), createGridData(GridData.FILL_HORIZONTAL, 4, 0)); 
		fPrivateVisibility= createButton(visibilityGroup, SWT.RADIO, JavadocExportMessages.getString("JavadocTreeWizardPage.privatebutton.label"), createGridData(GridData.FILL_HORIZONTAL, 1, 0)); 
		fPackageVisibility= createButton(visibilityGroup, SWT.RADIO, JavadocExportMessages.getString("JavadocTreeWizardPage.packagebutton.label"), createGridData(GridData.FILL_HORIZONTAL, 1, 0));