protected abstract void OnSetup()

Protected MustOverride Sub OnSetup

protected:
virtual void OnSetup() abstract

abstract OnSetup : unit -> unit 

Here internal values can be computed from the registered reference pairs if required. It is assured that the reference data pairs have valid dimensions: All x values have the same number of elements and all y values have the same number of elements. All reference data values are not . And there is at least 1 reference data pair.