docs: public Observable<ServiceResponse<OperationStatus>> updateHierarchicalEntityChildWithServiceResponseAsync(UUID appId, String versionId, UUID hEntityId, UUID hChildId, UpdateHierarchicalEntityChildOptionalParameter updateHierarchicalEntityChildOptionalParameter) {
          if (this.client.endpoint() == null) {
              throw new IllegalArgumentException("Parameter this.client.endpoint() is required and cannot be null.");
          }
          if (appId == null) {
              throw new IllegalArgumentException("Parameter appId is required and cannot be null.");
          }
          if (versionId == null) {
              throw new IllegalArgumentException("Parameter versionId is required and cannot be null.");
          }
          if (hEntityId == null) {
              throw new IllegalArgumentException("Parameter hEntityId is required and cannot be null.");
          }
          if (hChildId == null) {
              throw new IllegalArgumentException("Parameter hChildId is required and cannot be null.");
          }
          final String name = updateHierarchicalEntityChildOptionalParameter != null ? updateHierarchicalEntityChildOptionalParameter.name() : null;
  
          return updateHierarchicalEntityChildWithServiceResponseAsync(appId, versionId, hEntityId, hChildId, name);
      }