public StudyComponent addStudy() { //3
      StudyComponent t = new StudyComponent();
      if (this.study == null)
        this.study = new ArrayList<StudyComponent>();
      this.study.add(t);
      return t;
    }
public StudyComponent addStudy ( ) { StudyComponent t = new StudyComponent ( ) ; if ( this . study == null ) this . study = new ArrayList < StudyComponent > ( ) ; this . study . add ( t ) ; return t ; }
syntactic sugar