code: def registIssue(self, CorpNum, taxinvoice, writeSpecification=False, forceIssue=False, dealInvoiceMgtKey=None,
                      memo=None, emailSubject=None, UserID=None):
          
          if writeSpecification:
              taxinvoice.writeSpecification = True
  
          if forceIssue:
              taxinvoice.forceIssue = True
  
          if dealInvoiceMgtKey != None and dealInvoiceMgtKey != '':
              taxinvoice.dealInvoiceMgtKey = dealInvoiceMgtKey
  
          if memo != None and memo != '':
              taxinvoice.memo = memo
  
          if emailSubject != None and emailSubject != '':
              taxinvoice.emailSubject = emailSubject
  
          postData = self._stringtify(taxinvoice)
  
          return self._httppost('/Taxinvoice', postData, CorpNum, UserID, "ISSUE")
docs: 즉시 발행
              args
                  CorpNum : 팝빌회원 사업자번호
                  taxinvoice : 세금계산서 객체
                  writeSpecification : 거래명세서 동시작성 여부
                  forceIssue : 지연발행 강제여부
                  dealInvoiceMgtKey : 거래명세서 문서관리번호
                  memo : 메모
                  emailSubject : 메일제목, 미기재시 기본제목으로 전송
                  UsreID : 팝빌회원 아이디
              return
                  검색결과 정보
              raise
                  PopbillException