How to use the ember-flexberry-data/query/condition.Or function in ember-flexberry-data

objectListViewLimitPredicate() {
    let stage = this.get('currentContext').getCurrentStage();
    let spStage = new SimplePredicate('subsystem.stage', 'eq', stage);

    let iopDiagrams = Ember.A();
    iopDiagrams.pushObject(new IsOfPredicate('fd-dev-uml-ad'));
    iopDiagrams.pushObject(new IsOfPredicate('fd-dev-uml-cad'));
    iopDiagrams.pushObject(new IsOfPredicate('fd-dev-uml-cod'));
    iopDiagrams.pushObject(new IsOfPredicate('fd-dev-uml-dpd'));
    iopDiagrams.pushObject(new IsOfPredicate('fd-dev-uml-sd'));
    iopDiagrams.pushObject(new IsOfPredicate('fd-dev-uml-std'));
    iopDiagrams.pushObject(new IsOfPredicate('fd-dev-uml-ucd'));
    let cpDiagrams = new ComplexPredicate(Condition.Or, ...iopDiagrams);

    return new ComplexPredicate(Condition.And, spStage, cpDiagrams);
  },
});

model(params) {
    let store = this.get('store');
    let modelName = 'fd-dev-stage';
    let projectionName = 'ListFormView';

    let builder = new Builder(store)
      .from(modelName)
      .selectByProjection(projectionName)
      .orderBy('changeDate desc');

    if (params.search) {
      let predicate = new ComplexPredicate(Condition.Or,
        new StringPredicate('name').contains(params.search),
        new StringPredicate('description').contains(params.search));

      builder.where(predicate);
    }

    return hash({
      projects: store.query(modelName, builder.build()),
    });
  },