IAsyncCursor<TResult> Aggregate<TResult>(
	PipelineDefinition<TDocument, TResult> pipeline,
	AggregateOptions options = null,
	CancellationToken cancellationToken = null
)

Function Aggregate(Of TResult) ( 
	pipeline As PipelineDefinition(Of TDocument, TResult),
	Optional options As AggregateOptions = Nothing,
	Optional cancellationToken As CancellationToken = Nothing
) As IAsyncCursor(Of TResult)

abstract Aggregate : 
        pipeline : PipelineDefinition<'TDocument, 'TResult> * 
        ?options : AggregateOptions * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _options = defaultArg options null
        let _cancellationToken = defaultArg cancellationToken null
*)
-> IAsyncCursor<'TResult>