func(b *buffer, m message) error { return decodeInt64(b, &m.(*label).keyX) },
	// optional int64 str = 2
	func(b *buffer, m message) error { return decodeInt64(b, &m.(*label).strX) },
	// optional int64 num = 3
	func(b *buffer, m message) error { return decodeInt64(b, &m.(*label).numX) },
	// optional int64 num = 4
	func(b *buffer, m message) error { return decodeInt64(b, &m.(*label).unitX) },
}