public string Name {get; set;}

{
  var newQueryDefinition = new CIMKnowledgeGraphQueryDefinition();
  newQueryDefinition.Name = "Query1";
  newQueryDefinition.ProvenanceBehavior = ProvenanceBehavior.Include;
  newQueryDefinition.OpenCypherQuery = "MATCH (n) RETURN n LIMIT 10\"";     // return the first 10 entities

  // access the currently active knowledge graph investigation view
  KnowledgeGraphInvestigationView activeView = KnowledgeGraphInvestigationView.Active;
  KnowledgeGraphInvestigation investigation = activeView?.Investigation;
  if (investigation != null)
  {
    await QueuedTask.Run(() =>
    {
      // add the new query defintiion
      investigation.AddQueryDefinition(newQueryDefinition);
    });
  }
}

{
  // access the currently active knowledge graph investigation view
  KnowledgeGraphInvestigationView activeView = KnowledgeGraphInvestigationView.Active;
  KnowledgeGraphInvestigation investigation = activeView?.Investigation;
  if (investigation != null)
  {
    await QueuedTask.Run(() =>
    {
      // return the first 20 entities
      var newOpenCypherQuery = "MATCH (n) RETURN n LIMIT 20\"";

      // update the open cypher query for a query definition
      investigation.UpdateQueryDefinition("Query1", newOpenCypherQuery);


      // or update other properties
      var myQuery = investigation.GetQueryDefinition("Query1");
      if (myQuery != null)
      {
        myQuery.ProvenanceBehavior = ProvenanceBehavior.Exclude;
        myQuery.OpenCypherQuery = "MATCH (n) RETURN n LIMIT 30\"";

        investigation.UpdateQueryDefinition(myQuery);
      }
    });
  }
}