@Override
  public boolean isAcceptable(Object element, PsiElement context){
    if(element instanceof XmlTag){
      final String attributeValue = ((XmlTag)element).getAttributeValue("targetNamespace");
      if(attributeValue != null){
        for (String aMyValue : myValue) {
          if (aMyValue.equals(attributeValue)) return true;
        }
      }
    }
    else if(element instanceof XmlDocument){
      return isAcceptable(((XmlDocument) element).getRootTag(), context);
    }
    return false;
  }
@Override
  public boolean isAcceptable(Object element, PsiElement context)