code: @Override
  	public StringifiedAccumulatorResult[] getAccumulatorResultsStringified() {
  		Map<String, OptionalFailure<Accumulator<?, ?>>> accumulatorMap = aggregateUserAccumulators();
  		return StringifiedAccumulatorResult.stringifyAccumulatorResults(accumulatorMap);
  	}
docs: Returns the a stringified version of the user-defined accumulators.
  @return an Array containing the StringifiedAccumulatorResult objects