Task<DeleteResult> DeleteOneAsync(
	FilterDefinition<TDocument> filter,
	CancellationToken cancellationToken = null
)

Function DeleteOneAsync ( 
	filter As FilterDefinition(Of TDocument),
	Optional cancellationToken As CancellationToken = Nothing
) As Task(Of DeleteResult)

abstract DeleteOneAsync : 
        filter : FilterDefinition<'TDocument> * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _cancellationToken = defaultArg cancellationToken null
*)
-> Task<DeleteResult>