reflect.rtype.IsVariadic (method, view implemented interface methods)

4 uses

	reflect (current package)
		type.go#L869: 	mt := FuncOf(in, out, ft.IsVariadic())
		type.go#L939: func (t *rtype) IsVariadic() bool {
		type.go#L2126: 		if ft.IsVariadic() && i == int(ft.inCount)-1 {
		value.go#L382: 	isVariadic := t.IsVariadic()