@Override
  public String getElementDescription(final @NotNull PsiElement element, final @NotNull ElementDescriptionLocation location) {
    if (location instanceof UsageViewShortNameLocation) {
      if (element instanceof XmlAttributeValue) {
        return ((XmlAttributeValue)element).getValue();
      }
    }

    if (location instanceof UsageViewLongNameLocation) {
      if (element instanceof XmlTag) {
        return ((XmlTag)element).getName();
      }
      else if (element instanceof XmlAttributeValue) {
        return ((XmlAttributeValue)element).getValue();
      }
    }

    return null;
  }
@Override
  public String getElementDescription(final @NotNull PsiElement element, final @NotNull ElementDescriptionLocation location)