call_multiple_in_service.ts

save(close?: boolean): void {
    this.resourceService
      .save(this.formName, this.id, this.workItemForm.value)
      .pipe(
        tap(res => {
          if (close) {
            // Sofort Schließen, Rest interessiert uns nicht
            this.savedAndClosing.emit({ wi_resourceType: 'researchStudy', wi_id: this.id } as IWorkItem);
            return;
          }
          if (this.id !== res.id) {
            // Wechsel von temporärer auf permanente ID
            this.idChanged.emit({ old: this.id, new: res.id });
          }
          const formValue = createResourceFormValue(res);
          this.workItemForm.reset(formValue);
        })
      ).subscribe();

    // sideeffect to handle https://foo
    if (this.deviceComposition && this.deviceComposition.id.length > 1) {
      const { id, value } = this.deviceComposition;
      const fromDTO: R4.IComposition = {
        id,
        ...createDeviceCompositionResource(value),
      };
      this.compositionService.save(
        'Composition',
        fromDTO,
      ).pipe(
        tap((res) => {
          console.log('res', res);
          return res;
        })
      ).subscribe();
    }