Bentley Resistance Object Absent in MATLAB

I am trying to automate resistance calculation (BentleyResistance) via MATLAB. My code is as follows-
In line 17, there should be the option to choose methods required for resistance calculation (screenshot from HullSpeed Object Library is attached).
In MATLAB, I can only fine "SlenderBodyOnePlusK" and the other three i.e. "IsSelected", "Select", "SelectAll" are absent. How do I get this? Or what is the way to choose the desired method here?