Nest Aggregation with dynamic fields - elasticsearch

Question

Is it possible to use nest to create buckets with keywords/fields that are not strongly typed?

Due to the nature of this project. I do not have any root objects to pass in. Below is an example.

            var result = client.Search<PortalDoc>(s => s
                        .Aggregations(a => a
                            .Terms("agg_objecttype", t => t.Field(l => "CUSTOM_FIELD_HERE"))
                        )     
                    );

Answer 1

string implicitly convert to Field, so you can pass a string for any field name

var result = client.Search<PortalDoc>(s => s
    .Aggregations(a => a
        .Terms("agg_objecttype", t => t
            .Field("CUSTOM_FIELD_HERE")
        )
    )     
);