code: public Map<String, Map<Date, Long>> getData(final String collectorName) {
  		final Map<String, Map<Date, Long>> map = new HashMap<>();
  		final Testcases testcases = data.getTestcases();
  		for (final TestcaseType tct : testcases.getTestcase()) {
  			final Map<Date, Long> measures = new HashMap<>();
  			final List<Datacollector> collectorMap = tct.getDatacollector();
  			Datacollector collector = null;
  			for (final Datacollector dc : collectorMap) {
  				if (dc.getName().equals(collectorName)) {
  					collector = dc;
  				}
  			}
  			if (collector == null) {
  				LOG.error("Achtung: Datenkollektor " + collectorName + " nicht vorhanden");
  			} else {
  				for (final Result s : collector.getResult()) {
  					measures.put(new Date(s.getDate()), (long) s.getValue());
  				}
  				map.put(tct.getName(), measures);
  			}
  		}
  		return map;
  	}
docs: Returns a mapping from all testcases to their results for a certain collectorName.
  
  @param collectorName The name of the collector for loading the Results
  @return Mapping from all testcases to their results