Bug 12188 Wrong Stylesheet Flag for Javadoc + impossible to deaktivate selection
javadoc: invalid flag: -stylsheet shouldbe: javadoc -stylesheetfile And it's im possible to deactivate the selecting of using the external Stylesheet.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javadocexport/JavadocOptionsManager.java
case IJavaElement.PACKAGE_FRAGMENT :
					if (containsCompilationUnits((IPackageFragment) je)) {
						return je;
					}
					break;
				default :
					ICompilationUnit cu= (ICompilationUnit) JavaModelUtil.findElementOfKind(je, IJavaElement.COMPILATION_UNIT);
					if (cu != null) {
						if (cu.isWorkingCopy()) {
							cu= (ICompilationUnit) cu.getOriginalElement();
						}
						IType primaryType= JavaModelUtil.findPrimaryType(cu);
						if (primaryType != null) {
							return primaryType;
						}
					}
			}
		} catch (JavaModelException e) {
			JavaPlugin.log(e);
		}
		IJavaProject project= je.getJavaProject();
		if (getValidProject(project))
			return project;
		else
			return null;
	}
	private boolean getValidProject(IJavaProject project) {
		if (project != null) {
			try {
				IPackageFragmentRoot[] roots= project.getPackageFragmentRoots();