hrmp: {
      /**
       * HRMP channel closed.
       **/
      ChannelClosed: AugmentedEvent<ApiType, [byParachain: u32, channelId: PolkadotParachainPrimitivesPrimitivesHrmpChannelId], { byParachain: u32, channelId: PolkadotParachainPrimitivesPrimitivesHrmpChannelId }>;