How to use the @dfuse/client.InboundMessageType.TABLE_DELTA function in @dfuse/client

(message: InboundMessage) => {
      if (message.type === InboundMessageType.TABLE_DELTA) {
        const { dbop, block_num } = message.data as TableDeltaData
        const { total_ram_stake, total_unpaid_blocks } = dbop.new!.json!

        console.log(
          `Global state change @ #${block_num} [Total RAM Stake ${total_ram_stake}, Total Unpaid Block Count ${total_unpaid_blocks}]`
        )
      }
    }
  )

(message: InboundMessage) => {
      if (message.type === InboundMessageType.LISTENING) {
        console.log(prettifyJson(message.data))
        return
      }

      if (message.type === InboundMessageType.TABLE_SNAPSHOT) {
        console.log(prettifyJson(message.data))
        return
      }

      if (message.type === InboundMessageType.TABLE_DELTA) {
        console.log(prettifyJson(message.data))
        return
      }

      if (message.type === InboundMessageType.ERROR) {
        console.log(prettifyJson(message.data))
        return
      }
    },
    { fetch: true }