@Override
  public void registerReferenceProviders(@NotNull PsiReferenceRegistrar registrar) {
    registrar.registerReferenceProvider(
      PlatformPatterns.psiElement(XmlTokenType.XML_DATA_CHARACTERS).withParent(
        XmlPatterns.xmlText().inFile(XmlPatterns.xmlFile())
      ),
      new MavenPluginParamRefProvider());
  }
@Override
  public void registerReferenceProviders(@NotNull PsiReferenceRegistrar registrar)