message: Mark UnitController.getUnitFor as protected
diff: @@ -13,7 +13,7 @@ import {IUser} from '../../../shared/models/IUser';
  @UseBefore(passportJwtMiddleware)
  export class UnitController {
  - static async getUnitFor (unitId: string, currentUser: IUser, privilege: 'userCanViewCourse' | 'userCanEditCourse') {
  + protected static async getUnitFor (unitId: string, currentUser: IUser, privilege: 'userCanViewCourse' | 'userCanEditCourse') {
  const unit = await Unit.findById(unitId);
  if (!unit) {
  throw new NotFoundError();
  