code: public Observable<ServiceResponse<Page<ManagementLockObjectInner>>> listAtResourceLevelWithServiceResponseAsync(final String resourceGroupName, final String resourceProviderNamespace, final String parentResourcePath, final String resourceType, final String resourceName, final String filter) {
          return listAtResourceLevelSinglePageAsync(resourceGroupName, resourceProviderNamespace, parentResourcePath, resourceType, resourceName, filter)
              .concatMap(new Func1<ServiceResponse<Page<ManagementLockObjectInner>>, Observable<ServiceResponse<Page<ManagementLockObjectInner>>>>() {
                  @Override
                  public Observable<ServiceResponse<Page<ManagementLockObjectInner>>> call(ServiceResponse<Page<ManagementLockObjectInner>> page) {
                      String nextPageLink = page.body().nextPageLink();
                      if (nextPageLink == null) {
                          return Observable.just(page);
                      }
                      return Observable.just(page).concatWith(listAtResourceLevelNextWithServiceResponseAsync(nextPageLink));
                  }
              });
      }
docs: Gets all the management locks for a resource or any level below resource.
  
  @param resourceGroupName The name of the resource group containing the locked resource. The name is case insensitive.
  @param resourceProviderNamespace The namespace of the resource provider.
  @param parentResourcePath The parent resource identity.
  @param resourceType The resource type of the locked resource.
  @param resourceName The name of the locked resource.
  @param filter The filter to apply on the operation.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the PagedList&lt;ManagementLockObjectInner&gt; object