code: @NonNull
      public static DeleteResult newInstance(int numberOfRowsDeleted, @NonNull Set<Uri> affectedUris) {
          checkNotNull(affectedUris, "Please specify affected Uris");
          return new DeleteResult(numberOfRowsDeleted, affectedUris);
      }
docs: Creates new instance of immutable container for results of Delete Operation.
  
  @param numberOfRowsDeleted number of rows that were deleted.
  @param affectedUris        non-null set of Uris that wer affected.
  @return new instance of immutable container for results of Delete Operation.