public static PipelineStageDefinition<TInput, AggregateBucketAutoResult<TValue>> BucketAuto<TInput, TValue>(
	Expression<Func<TInput, TValue>> groupBy,
	int buckets,
	AggregateBucketAutoOptions options = null,
	ExpressionTranslationOptions translationOptions = null
)

Public Shared Function BucketAuto(Of TInput, TValue) ( 
	groupBy As Expression(Of Func(Of TInput, TValue)),
	buckets As Integer,
	Optional options As AggregateBucketAutoOptions = Nothing,
	Optional translationOptions As ExpressionTranslationOptions = Nothing
) As PipelineStageDefinition(Of TInput, AggregateBucketAutoResult(Of TValue))

static member BucketAuto : 
        groupBy : Expression<Func<'TInput, 'TValue>> * 
        buckets : int * 
        ?options : AggregateBucketAutoOptions * 
        ?translationOptions : ExpressionTranslationOptions 
(* Defaults:
        let _options = defaultArg options null
        let _translationOptions = defaultArg translationOptions null
*)
-> PipelineStageDefinition<'TInput, AggregateBucketAutoResult<'TValue>>