https://mongodb.github.io/mongo-csharp-driver/3.1.0/api/MongoDB.Driver/MongoDB.Driver.EmptyPipelineDefinition-1.OutputSerializer.html
Property OutputSerializer | MongoDB CSharp Driver API Reference
propertymongodbcsharpdriverapi
https://mongodb.github.io/mongo-csharp-driver/2.5/apidocs/html/P_MongoDB_Driver_Linq_AggregateQueryableExecutionModel_1_OutputSerializer.htm
AggregateQueryableExecutionModel(TOutput).OutputSerializer Property
Gets the output serializer.
property