public async Task <ActionResult <int> > AddNewVersionCourseProgram(int courseProgramId) { if (courseProgramId.Equals(null)) { return(BadRequest("Id is empty")); } courseProgramId = await courseStorage.CourseProgramAddNewVersion(courseProgramId); if (courseProgramId.Equals(null)) { return(BadRequest("Failed to add new version")); } return(Ok(courseProgramId)); }