private static DummyStatisticsImpl createDummyStatistics() {
    return new DummyStatisticsImpl(FunctionStatsImpl.getStatisticsType(), null, 0);
  }
Returns the Function Stats for the given function

@param functionID represents the function for which we are returning the function Stats
@param ds represents the Distributed System
@return object of the FunctionStats
geode-core/src/main/java/org/apache/geode/internal/cache/execute/metrics/FunctionStatsManager.java