code: def send_xapi_statements(self, lrs_configuration, days):
          
          persistent_course_grades = self.get_course_completions(lrs_configuration.enterprise_customer, days)
          users = self.prefetch_users(persistent_course_grades)
          course_overviews = self.prefetch_courses(persistent_course_grades)
  
          for persistent_course_grade in persistent_course_grades:
              try:
                  user = users.get(persistent_course_grade.user_id)
                  course_overview = course_overviews.get(persistent_course_grade.course_id)
                  course_grade = CourseGradeFactory().read(user, course_key=persistent_course_grade.course_id)
                  send_course_completion_statement(lrs_configuration, user, course_overview, course_grade)
              except ClientError:
                  LOGGER.exception(
                      'Client error while sending course completion to xAPI for'
                      ' enterprise customer {enterprise_customer}.'.format(
                          enterprise_customer=lrs_configuration.enterprise_customer.name
                      )
                  )
docs: Send xAPI analytics data of the enterprise learners to the given LRS.
  
          Arguments:
              lrs_configuration (XAPILRSConfiguration): Configuration object containing LRS configurations
                  of the LRS where to send xAPI  learner analytics.
              days (int): Include course enrollment of this number of days.