code: def close_report(self, ledger_id, report_id, callback_uri=None):
          u
          arguments = {'callback_uri': callback_uri}
          return self.do_req('PUT',
                             self.merchant_api_base_url + '/ledger/' +
                             ledger_id + '/report/' +
                             report_id + '/', arguments)
docs: u"""Close Report
  
          When you PUT to a report, it will start the process of closing it. When
          the closing process is complete (i.e. when report.status == 'closed')
          mCASH does a POST call to callback_uri, if provided. This call will
          contain JSON data similar to when GETing the Report.
  
          Closing a report automatically open a new one.
  
          The contents of a GET
          /merchant/v1/ledger/<ledger_id>/report/<report_id>/ is included in
          callback if callback is a secure URI, otherwise the link itself is sent
          in callback.
  
          Arguments:
              ledger_id:
                  Id for ledger for report
              report_id:
                  Report id assigned by mCASH
              callback_uri:
                  Callback URI to be called when Report has finished closing.