ItemSelectorViewModelTModel, TValueExtractValueFromModel - метод

protected abstract TValue ExtractValueFromModel(
	TModel item
)

Protected MustOverride Function ExtractValueFromModel ( 
	item As TModel
) As TValue

protected:
virtual TValue ExtractValueFromModel(
	TModel item
) abstract

abstract ExtractValueFromModel : 
        item : 'TModel -> 'TValue