VolumeAddition Operator

public static Volume operator +(
	Volume value1,
	Volume value2
)

Public Shared Operator + ( 
	value1 As Volume,
	value2 As Volume
) As Volume

public:
static Volume operator +(
	Volume value1, 
	Volume value2
)

static let inline (+)
        value1 : Volume * 
        value2 : Volume  : Volume

JavaScript does not support overloaded operators.