internal CourseTeacherReport_Filter[] ExtendCourseTeacherReportFilter(CourseTeacherReport_Filter[] filter, string criteria, CourseTeacherReport_Fields field)
 {
     return(filter.Concat(SingleCourseTeacherReportFilter(criteria, field)).ToArray());
 }
 internal CourseTeacherReport_Filter[] SingleCourseTeacherReportFilter(string criteria, CourseTeacherReport_Fields field)
 {
     return(new CourseTeacherReport_Filter[]
     {
         new CourseTeacherReport_Filter()
         {
             Field = field,
             Criteria = criteria
         }
     });
 }