message: Dataservice adapted?
diff: @@ -2,6 +2,7 @@ import {Injectable} from '@angular/core';
  import {BackendService} from './backend.service';
  import {Dependency} from '../../about/licenses/dependency.model';
  import {ITaskUnit} from '../../../../../../shared/models/units/ITaskUnit';
  +import {IFreeTextUnit} from '../../../../../../shared/models/units/IFreeTextUnit';
  abstract class DataService {
  @@ -168,8 +169,13 @@ export class UnitService extends DataService {
  return promise;
  }
  - addFreeTextUnit() {
  - // TODO
  + addFreeTextUnit(freeTextUnit: IFreeTextUnit, lectureId: string) {
  + // TODO ?!
  + const originalApiPath = this.apiPath;
  + this.apiPath += 'freeTexts';
  + const promise = this.createItem({freeTextUnit: freeTextUnit, lectureId: lectureId});
  + this.apiPath = originalApiPath;
  + return promise;
  }
  }
  