void Add(
	ref T value0,
	ref T value1,
	ref T result
)

Sub Add ( 
	ByRef value0 As T,
	ByRef value1 As T,
	ByRef result As T
)

void Add(
	T% value0, 
	T% value1, 
	T% result
)

abstract Add : 
        value0 : 'T byref * 
        value1 : 'T byref * 
        result : 'T byref -> unit