@spec lookup(
  Inttegro.Client.t(),
  Inttegro.LookupBalanceTransactionRequest.t(),
  keyword()
) ::
  {:ok, Inttegro.BalanceTransaction.t()} | {:error, Exception.t()}

@spec page(
  Inttegro.Client.t(),
  Inttegro.PageBalanceTransactionsRequest.t(),
  keyword()
) ::
  {:ok, Inttegro.BalanceTransactionPage.t()} | {:error, Exception.t()}