MultiValueConverterTSource1, TSource2, TTargetBoxSourceValue1 - метод

Protected Overridable Function BoxSourceValue1 ( 
	value As TSource1
) As Object

protected:
virtual Object^ BoxSourceValue1(
	TSource1 value
)

abstract BoxSourceValue1 : 
        value : 'TSource1 -> Object 
override BoxSourceValue1 : 
        value : 'TSource1 -> Object