added logic to return nils for cycle_index_of, cycle_start_date_for and cycle_end_date_for if the given index or date is outside the bounds of the leave cycle start date
added logic to return nils for cycle_index_of, cycle_start_date_for and cycle_end_date_for if the given index or date is outside the bounds of the leave cycle start date
virtualstaticvoid/human_faktor,virtualstaticvoid/human_faktor,virtualstaticvoid/human_faktor