Bug 38922 method getNextPage() in JavadocTreeWizardPage unnecessary [Javadoc] [Wizard]
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javadocexport/JavadocTreeWizardPage.java
protected void setTreeChecked(IJavaElement[] sourceElements, IJavaProject project) throws JavaModelException {
		if (sourceElements.length < 1)
			fInputGroup.initialCheckTreeItem(project);
		else {
			for (int i= 0; i < sourceElements.length; i++) {
				IJavaElement curr= sourceElements[i];
				if (curr instanceof ICompilationUnit) {
					fInputGroup.initialCheckListItem(curr);
				} else if (curr instanceof IPackageFragment) {
					fInputGroup.initialCheckTreeItem(curr);
				} else if (curr instanceof IJavaProject) {
					fInputGroup.initialCheckTreeItem(curr);
				} else if (curr instanceof IPackageFragmentRoot) {
					IPackageFragmentRoot root= (IPackageFragmentRoot) curr;
					if (!root.isArchive())
						fInputGroup.initialCheckTreeItem(curr);
				}
			}
		}
	}
	private IPath[] getSourcePath(IJavaProject[] projects) {
		ArrayList res= new ArrayList();
		
		for (int k= 0; k < projects.length; k++) {
			IJavaProject iJavaProject= projects[k];
			try {
				IPackageFragmentRoot[] roots= iJavaProject.getPackageFragmentRoots();
				for (int i= 0; i < roots.length; i++) {
					IPackageFragmentRoot curr= roots[i];
					if (curr.getKind() == IPackageFragmentRoot.K_SOURCE) {