public List<Family> getFamiliesTDT() {
List<Family> families = new ArrayList<>();
Individual ind;
for (Map.Entry<String, Individual> entry : this.individuals.entrySet()) {
ind = entry.getValue();
if (ind.getFather() != null && ind.getMother() != null) {
addIndividualToFamily(ind, ind.getFather(), ind.getMother(), families);
}
}
return families;
}
