public string HasDocumentTypeName {get;}

{
  await QueuedTask.Run(() =>
  {
    //Create a connection properties
    var kg_props =
        new KnowledgeGraphConnectionProperties(new Uri(url));
    using (var kg = new KnowledgeGraph(kg_props))
    {
      // use the KnowledgeGraphPropertyInfo
      var propInfo = kg.GetPropertyNameInfo();
      var supportsDocs = propInfo.SupportsDocuments;
      var documentType = propInfo.DocumentTypeName;
      var hasDocumentType = propInfo.HasDocumentTypeName; // available at Pro 3.6 only
      var documentInfo = propInfo.DocumentPropertyInfo;
    }
  });
}