protected abstract Task<int> DoUpsertAsync(
	Row row,
	FieldFilterFunc filter = null
)

protected abstract Task<int> DoUpsertAsync(
	Row row,
	FieldFilterFunc filter = null
)

Protected MustOverride Function DoUpsertAsync ( 
	row As Row,
	Optional filter As FieldFilterFunc = Nothing
) As Task(Of Integer)

Protected MustOverride Function DoUpsertAsync ( 
	row As Row,
	Optional filter As FieldFilterFunc = Nothing
) As Task(Of Integer)

protected:
virtual Task<int>^ DoUpsertAsync(
	Row^ row, 
	FieldFilterFunc^ filter = nullptr
) abstract

protected:
virtual Task<int>^ DoUpsertAsync(
	Row^ row, 
	FieldFilterFunc^ filter = nullptr
) abstract

abstract DoUpsertAsync : 
        row : Row * 
        ?filter : FieldFilterFunc 
(* Defaults:
        let _filter = defaultArg filter null
*)
-> Task<int>

abstract DoUpsertAsync : 
        row : Row * 
        ?filter : FieldFilterFunc 
(* Defaults:
        let _filter = defaultArg filter null
*)
-> Task<int>