docs: def on_assessment(self, assessment):
          """
          To turn on assessment
          :param assessment: string
          """
  
          assessmentObj = self.get_assessment(assessment)
  
          url = '/datastream/' + str(assessmentObj.get_datastream()) + '/on?assessment=' + str(assessment)
          response = self.http.post(url,"")
          return Schemas.Assessment(assessment=response[0])