def esr9(invoice, esr_account)
      esr9_build(invoice.balance.currency_round, invoice, esr_account.pc_id, esr_account.esr_id)
    end
def esr9(invoice, esr_account)
      esr9_build(invoice.balance.currency_round, invoice, esr_account.pc_id, esr_account.esr_id)
    end
ESR helpers