private static PsiReference[] createReferencesWithPrefix(XmlAttribute attribute, PsiReference reference) {
      if (attribute.getValue().contains(":")) {
        return new PsiReference[]{ new PrefixReference(attribute), reference };
      } else {
        return new PsiReference[]{ reference };
      }
    }
private static PsiReference[] createReferencesWithPrefix(XmlAttribute attribute, PsiReference reference)