code: async function hello () {
    const id = await Rpc.compose.deepProperties.rpcMethods.hello.call(this)
    this.rpcSessions[id].address = await this.address()
    return Promise.resolve(id)
  }
docs: Confirm client connection attempt and associate new session with currently
  selected account preset
  @instance
  @category async
  @return {Promise<String>} Session ID