code: public LibraryService getLibraryService() {
          if (_libraryService == null) {
              synchronized (CCApi2.class) {
                  if (_libraryService == null) {
                      _libraryService = _retrofit.create(LibraryService.class);
                  }
              }
          }
  
          return _libraryService;
      }
docs: Gets the library service.
  
  @return the library service