code: @Nonnull
    public Query limit(int limit) {
      QueryOptions newOptions = new QueryOptions(options);
      newOptions.limit = limit;
      return new Query(firestore, path, newOptions);
    }
docs: Creates and returns a new Query that's additionally limited to only return up to the specified
  number of documents.
  
  @param limit The maximum number of items to return.
  @return The created Query.