code: @Override
      public Page<T> findAll(Pageable pageable) {
          Assert.notNull(pageable, "pageable should not be null");
  
          return operation.findAll(pageable, information.getJavaType(), information.getCollectionName());
      }
docs: FindQuerySpecGenerator
  Returns a Page of entities meeting the paging restriction provided in the Pageable object.
  
  @param pageable
  @return a page of entities