for (String key : allProperties) {
header.append(CSV_SEPARATOR).append(key);
}
/* write header */
out.append(header);
out.newLine();
List<String> keySet = new ArrayList<String>(e.getResult().keySet());
String[] toSort = keySet.toArray(new String[]{});
java.util.Arrays.sort(toSort,String.CASE_INSENSITIVE_ORDER);
/* write measured values for all samples */