code: @Override
  	public void resetFixedValue(final String dataSetKey, final String entryKey) {
  		Map<String, String> map = fixedValues.get(dataSetKey);
  		if (map != null) {
  			if (map.remove(entryKey) == null) {
  				log.warn("Entry " + dataSetKey + "." + entryKey + " could not be found in map of fixed values");
  			}
  			if (map.isEmpty()) {
  				fixedValues.remove(dataSetKey);
  			}
  		}
  		DataSet dataSet = getCurrentDataSets().get(dataSetKey);
  		if (dataSet != null) {
  			dataSet.resetFixedValue(entryKey);
  		}
  	}
docs: Resets (= removes) a specific fixed value from the specified {@link DataSet}.
  
  @param dataSetKey
  The {@link DataSet} key.
  @param entryKey
  The entry key.