composers (umn: UpdateMasternodeData): BufferComposer[] {
    return [
      ComposableBuffer.uInt8(() => umn.updateType, v => umn.updateType = v),
      ComposableBuffer.single<UpdateMasternodeAddress>(() => umn.address, v => umn.address = v, v => new CUpdateMasternodeAddress(v))
    ]