Where is selectionForeground in avalonia

I am super confused and it might just be a bug in avalonia. I am trying to change the propertie

SelectionForeground

SelectionForeground

of the

SelectableTextBlock

SelectableTextBlock

. But aperently in my codebase, that property is non existant. even though it is in pretty much every documentation that i can find

https://docs.avaloniaui.net/docs/reference/controls/selectable-textblock

REFERENCE - Built-in Controls