in src/main/java/org/apache/commons/configuration2/PropertiesConfigurationLayout.java [418:435]
private int checkHeaderComment(final List<String> commentLines) {
if (loadCounter.get() == 1 && layoutData.isEmpty()) {
int index = commentLines.size() - 1;
// strip comments that belong to first key
while (index >= 0 && StringUtils.isNotEmpty(commentLines.get(index))) {
index--;
}
// strip blank lines
while (index >= 0 && StringUtils.isEmpty(commentLines.get(index))) {
index--;
}
if (getHeaderComment() == null) {
setHeaderComment(extractComment(commentLines, 0, index));
}
return index + 1;
}
return 0;
}