public PathsEntitiesAndRelationships ExtractPathsEntitiesAndRelationships( 
   SortedSet<ulong> filterPathIndices
)

    //using ArcGIS.Core.Data.Knowledge.Extensions;

    await QueuedTask.Run(async() =>
    {
        var ffp_config = new CIMFilteredFindPathsConfiguration();
        ffp_config.Name = "Create Link Chart from FFP Results";
//set up config
//...
        
        var results = kg.RunFilteredFindPaths(ffp_config);

        var pathsEntitiesAndRelationships = results.ExtractPathsEntitiesAndRelationships(null);

        //Create a KG layer id set
        var kgLayerIdSet = KnowledgeGraphLayerIDSet.FromKnowledgeGraphIDSet(
            pathsEntitiesAndRelationships.ToKnowledgeGraphIDSet(
                KGResultContentFromFFP.EntitiesAndRelationships));

        //Create a brand new link chart with the results and show it
        var linkChart = MapFactory.Instance.CreateLinkChart(
                                            "KG Intro", kg, kgLayerIdSet);

        var mapPane = await FrameworkApplication.Panes.CreateMapPaneAsync(linkChart);
        var linkChartView = mapPane.MapView;

        //Change layout algo to match the default used by the UI after FFP
        await linkChartView.SetLinkChartLayoutAsync(
            KnowledgeLinkChartLayoutAlgorithm.Hierarchical_TopToBottom);

        //Set root nodes - they correspond to the origin nodes of the result paths
        var kgLayerIdSetForRootNodes = KnowledgeGraphLayerIDSet.FromKnowledgeGraphIDSet(
            pathsEntitiesAndRelationships.ToKnowledgeGraphIDSet(
                KGResultContentFromFFP.OnlyPathsOriginEntities));

        //To correctly identify the ids in the link chart we must change the ids
        //from Geodatabase oids returned in the KnowledgeGraphLayerIDSet to the
//temporary/synthetic oids used by layers in the link chart...
        var kg_layer = linkChart.GetLayersAsFlattenedList().OfType<KnowledgeGraphLayer>().First();
        var mapMembers = kg_layer.GetMapMembersAsFlattenedList();
        var oidDict = kgLayerIdSetForRootNodes.ToOIDDictionary();
        var mmDict = new Dictionary<MapMember, List<long>>();
        foreach (var kvp in oidDict)
        {
            var named_type = kvp.Key;
            foreach (var mm in mapMembers)
            {
                if (mm is LinkChartFeatureLayer fl_lc && fl_lc.IsEntity)
                {
                    if (fl_lc.GetTypeName().ToLower() == named_type.ToLower())
                    {
                        var lc_oids = new List<long>();
                        //these oids are from the geodatabase
                        var oid_field = $"{fl_lc.GetTypeName()}.objectid";
                        var id_list = string.Join(',', kvp.Value.ToArray());
                        var where = $"{fl_lc.GetTypeName()}.objectid IN ({id_list})";

                        var qf = new ArcGIS.Core.Data.QueryFilter()
                        {
                            WhereClause = where,
                            SubFields = $"LC.OID,{oid_field}"//the 'LC.OID' oids are the ones
                                           //we need for the mapmember id set
                                           //in the link chart
                        };
                        var rc = fl_lc.Search(qf);
                        var oid_idx = rc.FindField(oid_field);
                        while (rc.MoveNext())
                        {
                            var oid = (long)rc.Current[oid_idx];
                            var lc_oid = rc.Current.GetObjectID();
                            lc_oids.Add(lc_oid);
                        }
                        rc.Dispose();
                        mmDict[fl_lc] = lc_oids;
                        break;
                    }
                }
            }
        }

        var mmIdSet = MapMemberIDSet.FromDictionary(mmDict);
        linkChartView.SetRootNodes(mmIdSet);
    });

//using ArcGIS.Core.Data.Knowledge.Extensions;

var linkChartView = MapView.Active;

await QueuedTask.Run(async () =>
{
    var ffp_config = new CIMFilteredFindPathsConfiguration();
    ffp_config.Name = "Append to Link Chart from FFP Results";
    //set up config
    //...

    var results = kg.RunFilteredFindPaths(ffp_config);

    var pathsEntitiesAndRelationships = results.ExtractPathsEntitiesAndRelationships(null);

    //Create a KG layer id set
    var kgLayerIdSet = KnowledgeGraphLayerIDSet.FromKnowledgeGraphIDSet(
        pathsEntitiesAndRelationships.ToKnowledgeGraphIDSet(
            KGResultContentFromFFP.EntitiesAndRelationships));

    var map = linkChartView.Map;

    if (!map.CanAppendToLinkChart(kgLayerIdSet))
        return;//not compatible

    map.AppendToLinkChart(kgLayerIdSet);
    //switch layout algo
    var algo = linkChartView.GetLinkChartLayout();
    if (algo != KnowledgeLinkChartLayoutAlgorithm.Hierarchical_TopToBottom)
    {
        //Change layout algo to match the default used by the UI after FFP
        await linkChartView.SetLinkChartLayoutAsync(
            KnowledgeLinkChartLayoutAlgorithm.Hierarchical_TopToBottom);
    }

    //To set link chart root nodes see 'Create Link Chart from FFP Results'
});

//using ArcGIS.Core.Data.Knowledge.Extensions;

await QueuedTask.Run(async () =>
{
    var ffp_config = new CIMFilteredFindPathsConfiguration();
    ffp_config.Name = "List out FFP Results Origin, Destination, Other Entities";
    //set up config
    //...

    var results = kg.RunFilteredFindPaths(ffp_config);

    if (results.CountPaths == 0)
    {
        System.Diagnostics.Debug.WriteLine("FFP returned no paths");
        return;
    }

    //print out paths by increasing length, min cost, max cost
    var path_by_len_indices = (IEnumerable<long>)results.PathIndicesOrderedByIncreasingPathLength
                                                            .Select(idx => idx.index);
    var path_by_min_cost = (IEnumerable<long>)results.PathIndicesOrderedByIncreasingMinPathCost
                                                            .Select(idx => idx.index);
    var path_by_max_cost = (IEnumerable<long>)results.PathIndicesOrderedByIncreasingMaxPathCost
                                                            .Select(idx => idx.index);

    var x = 0;
    StringBuilder sb = new StringBuilder();

    foreach (var path_indeces in new List<IEnumerable<long>> {
        path_by_len_indices,
        path_by_min_cost,
        path_by_max_cost})
    {
        if (x == 0)
            sb.AppendLine($"Entities by length: {path_by_len_indices.Count()}");
        else if (x == 1)
            sb.AppendLine($"Entities by min cost: {path_by_min_cost.Count()}");
        else if (x == 2)
            sb.AppendLine($"Entities by max cost: {path_by_max_cost.Count()}");
        x++;
        foreach (var path_idx in path_indeces)
        {
            var path = (ResultPath)results.MaterializePath(path_idx);
            sb.AppendLine(
                $"Path[{path_idx}] length: {path.Length}, min: {path.MinCost} max: {path.MaxCost}");

            var sorted_set = new SortedSet<ulong>();
            sorted_set.Add((ulong)path_idx);
            var per = results.ExtractPathsEntitiesAndRelationships(sorted_set);

            var origin_dest_uids = new List<string>();
            var sep = "";

            sb.Append(" Origin EntitiesUIDs: ");
            foreach (var idx in per.PathsOriginEntitiesUIDsIndexes)
            {
                //See 'List out FFP Results by Path Length, Min Cost, Max Cost' for
  //FormatID method above
                var uid = FormatID(per.EntitiesUIDs[idx].ToString());
                origin_dest_uids.Add(uid);

                var origin =
                    $"{sep}{per.EntityTypeNames[per.EntityTypes[idx]]}:{uid}";
                sep = ", ";
                sb.Append($"{origin}");
            }
            sb.AppendLine("");

            sep = "";
            sb.Append(" Destination EntitiesUIDs: ");
            foreach (var idx in per.PathsDestinationEntitiesUIDsIndexes)
            {
                var uid = FormatID(per.EntitiesUIDs[idx].ToString());
                origin_dest_uids.Add(uid);

                var dest =
                    $"{sep}{per.EntityTypeNames[per.EntityTypes[idx]]}:{uid}";
                sep = ", ";
                sb.Append($"{dest}");
            }
            sb.AppendLine("");

            sep = "";
            var idx2 = 0;
            sb.Append(" Other EntitiesUIDs: ");
            bool wereAnyOthers = false;
            foreach (var raw_uid in per.EntitiesUIDs)
            {
                var uid = FormatID(raw_uid.ToString());
                if (!origin_dest_uids.Contains(uid))
                {
                    var other =
                    $"{sep}{per.EntityTypeNames[per.EntityTypes[idx2]]}:{uid}";
                    sep = ", ";
                    sb.Append($"{other}");
                    wereAnyOthers = true;
                }
                idx2++;
            }
            if (!wereAnyOthers)
                sb.Append(" <<none>>");

            //sb.AppendLine("");

            var entity_str = sb.ToString();
            System.Diagnostics.Debug.WriteLine(entity_str);

            sb.Clear();
            sep = "";
        }
    }

});

//using ArcGIS.Core.Data.Knowledge.Extensions;

await QueuedTask.Run(async () =>
{
    var ffp_config = new CIMFilteredFindPathsConfiguration();
    ffp_config.Name = "List out FFP Results Relationships";
    //set up config
    //...

    var results = kg.RunFilteredFindPaths(ffp_config);

    if (results.CountPaths == 0)
    {
        System.Diagnostics.Debug.WriteLine("FFP returned no paths");
        return;
    }

    //print out paths by increasing length, min cost, max cost
    var path_by_len_indices = (IEnumerable<long>)results.PathIndicesOrderedByIncreasingPathLength
                                                            .Select(idx => idx.index);
    var path_by_min_cost = (IEnumerable<long>)results.PathIndicesOrderedByIncreasingMinPathCost
                                                            .Select(idx => idx.index);
    var path_by_max_cost = (IEnumerable<long>)results.PathIndicesOrderedByIncreasingMaxPathCost
                                                            .Select(idx => idx.index);

    var x = 0;
    StringBuilder sb = new StringBuilder();

    foreach (var path_indeces in new List<IEnumerable<long>> {
        path_by_len_indices,
        path_by_min_cost,
        path_by_max_cost})
    {
        if (x == 0)
            sb.AppendLine($"Relationships by length: {path_by_len_indices.Count()}");
        else if (x == 1)
            sb.AppendLine($"Relationships by min cost: {path_by_min_cost.Count()}");
        else if (x == 2)
            sb.AppendLine($"Relationships by max cost: {path_by_max_cost.Count()}");
        x++;
        foreach (var path_idx in path_indeces)
        {
            var path = (ResultPath)results.MaterializePath(path_idx);
            sb.AppendLine(
                $"Path[{path_idx}] length: {path.Length}, min: {path.MinCost} max: {path.MaxCost}");

            var sorted_set = new SortedSet<ulong>();
            sorted_set.Add((ulong)path_idx);
            var per = results.ExtractPathsEntitiesAndRelationships(sorted_set);

            var idx = 0;
            foreach (var rel_uid in per.RelationshipsUIDs)
            {
                sb.Append($" RelationshipsUIDs[{idx}]: ");

                var uid = FormatID(rel_uid.ToString());
                var rel_info =
                    $"{per.RelationshipTypeNames[per.RelationshipTypes[idx]]}:{uid}";
                sb.Append($"{rel_info}\r\n");
                //From entity:
                var entity_idx = per.RelationshipsFrom[idx];
                var origin_uid = FormatID(per.EntitiesUIDs[entity_idx].ToString());
                var origin = $"{per.EntityTypeNames[per.EntityTypes[entity_idx]]}:{origin_uid}";
                sb.Append($"   RelationshipsFrom: {origin}\r\n");
                //To entity
                entity_idx = per.RelationshipsTo[idx];
                var dest_uid = FormatID(per.EntitiesUIDs[entity_idx].ToString());
                var dest = $"{per.EntityTypeNames[per.EntityTypes[entity_idx]]}:{dest_uid}";
                sb.Append($"   RelationshipsTo: {dest}\r\n");
                idx++;
            }

            var rel_str = sb.ToString();
            System.Diagnostics.Debug.WriteLine(rel_str);
sb.Clear();
        }
    }

});