public virtual IAggregateFluent<TNewResult> GraphLookup<TFrom, TConnectFrom, TConnectTo, TStartWith, TAsElement, TAs, TNewResult>(
	IMongoCollection<TFrom> from,
	FieldDefinition<TFrom, TConnectFrom> connectFromField,
	FieldDefinition<TFrom, TConnectTo> connectToField,
	AggregateExpressionDefinition<TResult, TStartWith> startWith,
	FieldDefinition<TNewResult, TAs> as,
	FieldDefinition<TAsElement, int> depthField,
	AggregateGraphLookupOptions<TFrom, TAsElement, TNewResult> options = null
)
where TAs : Object, IEnumerable<TAsElement>

Public Overridable Function GraphLookup(Of TFrom, TConnectFrom, TConnectTo, TStartWith, TAsElement, TAs As {Object, IEnumerable(Of TAsElement)}, TNewResult) ( 
	from As IMongoCollection(Of TFrom),
	connectFromField As FieldDefinition(Of TFrom, TConnectFrom),
	connectToField As FieldDefinition(Of TFrom, TConnectTo),
	startWith As AggregateExpressionDefinition(Of TResult, TStartWith),
	as As FieldDefinition(Of TNewResult, TAs),
	depthField As FieldDefinition(Of TAsElement, Integer),
	Optional options As AggregateGraphLookupOptions(Of TFrom, TAsElement, TNewResult) = Nothing
) As IAggregateFluent(Of TNewResult)

abstract GraphLookup : 
        from : IMongoCollection<'TFrom> * 
        connectFromField : FieldDefinition<'TFrom, 'TConnectFrom> * 
        connectToField : FieldDefinition<'TFrom, 'TConnectTo> * 
        startWith : AggregateExpressionDefinition<'TResult, 'TStartWith> * 
        as : FieldDefinition<'TNewResult, 'TAs> * 
        depthField : FieldDefinition<'TAsElement, int> * 
        ?options : AggregateGraphLookupOptions<'TFrom, 'TAsElement, 'TNewResult> 
(* Defaults:
        let _options = defaultArg options null
*)
-> IAggregateFluent<'TNewResult>  when 'TAs : Object and IEnumerable<'TAsElement>
override GraphLookup : 
        from : IMongoCollection<'TFrom> * 
        connectFromField : FieldDefinition<'TFrom, 'TConnectFrom> * 
        connectToField : FieldDefinition<'TFrom, 'TConnectTo> * 
        startWith : AggregateExpressionDefinition<'TResult, 'TStartWith> * 
        as : FieldDefinition<'TNewResult, 'TAs> * 
        depthField : FieldDefinition<'TAsElement, int> * 
        ?options : AggregateGraphLookupOptions<'TFrom, 'TAsElement, 'TNewResult> 
(* Defaults:
        let _options = defaultArg options null
*)
-> IAggregateFluent<'TNewResult>  when 'TAs : Object and IEnumerable<'TAsElement>