@Override
  public FeatureDescriptor[] getFeatureDescriptors() {
    return new FeatureDescriptor[]{new FeatureDescriptor(XmlCompletionContributor.TAG_NAME_COMPLETION_FEATURE,
                                                         "completion",
                                                         "TagNameCompletion",
                                                         XmlBundle.message("tag.name.completion.display.name"),
                                                         0,
                                                         1,
                                                         Collections.emptySet(),
                                                         3,
                                                         this)};
  }
@Override
  public FeatureDescriptor[] getFeatureDescriptors()