public KnowledgeGraph( 
   KnowledgeGraphConnectionProperties connectionProperties
)

{
  await QueuedTask.Run(() =>
  {
    //Create a connection properties
    var kg_props =
        new KnowledgeGraphConnectionProperties(new Uri(url));
    try
    {
      //Open a connection
      using (var kg = new KnowledgeGraph(kg_props))
      {
        //TODO...use the KnowledgeGraph
      }
    }
    catch (GeodatabaseNotFoundOrOpenedException ex)
    {
      System.Diagnostics.Debug.WriteLine(ex.ToString());
    }
  });
}

{
  await QueuedTask.Run(() =>
  {
    //Starting at 3.7, users can connect to a _file_ knowledge graph
    //The extension for a file kg is ".knowledgegraph"
    // Any path you want
    string kgPath = @"C:\Data\KG\Filebased_KG";
    string kgFileName = @"Test_File_KG.knowledgegraph";

    var kg_full_path = System.IO.Path.Combine(kgPath, kgFileName);

    var kg_props = new KnowledgeGraphConnectionProperties(new Uri(kg_full_path));
    try
    {
      //Open a connection
      using (var kg = new KnowledgeGraph(kg_props))
      {
        //TODO...use the File KnowledgeGraph
        var i = 0;
        //Get the featureclass definitions from the KG datastore
        var fc_defs = kg.GetDefinitions<FeatureClassDefinition>();
        //For each feature class definition, get the corresponding
        //feature class. Note: The name of the feature class will match 
        //the name of its corresponding KnowledgeGraph named object type
        //in the KnowledgeGraph graph data model
        foreach (var fc_def in fc_defs)
        {
          var fc_name = fc_def.GetName();
          System.Diagnostics.Debug.WriteLine($"FeatureClass[{i++}] {fc_name}");
        }
      }
    }
    catch (GeodatabaseNotFoundOrOpenedException ex)
    {
      System.Diagnostics.Debug.WriteLine(ex.ToString());
    }
  });
}

{
  await QueuedTask.Run(() =>
  {
    //Create a connection properties
    var kg_props =
        new KnowledgeGraphConnectionProperties(new Uri(url));
    //Connect to the KnowledgeGraph datastore
    //KnowledgeGraph datastores contain tables and feature classes
    using (var kg = new KnowledgeGraph(kg_props))
    {
      //Get the featureclass definitions from the KG datastore
      var fc_defs = kg.GetDefinitions<FeatureClassDefinition>();
      //For each feature class definition, get the corresponding
      //feature class. Note: The name of the feature class will match 
      //the name of its corresponding KnowledgeGraph named object type
      //in the KnowledgeGraph graph data model
      foreach (var fc_def in fc_defs)
      {
        var fc_name = fc_def.GetName();
        using (var fc = kg.OpenDataset<FeatureClass>(fc_name))
        {
          //TODO - use the feature class
        }
      }
    }
  });
}

{
  QueuedTask.Run(() =>
  {
    //Create a connection properties
    var kg_props =
        new KnowledgeGraphConnectionProperties(new Uri(url));
    //Connect to the KnowledgeGraph datastore
    //KnowledgeGraph datastores contain tables and feature classes
    using (var kg = new KnowledgeGraph(kg_props))
    {
      //Get the table definitions from the KG datastore
      var tbl_defs = kg.GetDefinitions<TableDefinition>();
      //For each table definition, get the corresponding
      //table. Note: The name of the table will match the name
      //of its corresponding KnowledgeGraph named object type in
      //the KnowledgeGraph graph data model
      foreach (var tbl_def in tbl_defs)
      {
        var tbl_name = tbl_def.GetName();
        using (var fc = kg.OpenDataset<Table>(tbl_name))
        {
          //TODO - use the table
        }
      }
    }
  });
}