code: @Deprecated
      @Override
      public File fetch(String source, String dest, long diskQuotaSizeInKB) throws Exception {
          return fetchFromSource(source, dest, null, null, -1, diskQuotaSizeInKB, null);
      }
docs: Used for unit tests only.
  
  FIXME: Refactor test code with dependency injection or scope restrictions so this function is not public.
  
  @deprecated Do not use for production code, use {@link #fetch(String, String, voldemort.server.protocol.admin.AsyncOperationStatus, String, long, voldemort.store.metadata.MetadataStore, Long diskQuotaSizeInKB)} instead.