code: public java.util.List<Integer> getOccurrenceDays() {
          if (occurrenceDays == null) {
              occurrenceDays = new com.amazonaws.internal.SdkInternalList<Integer>();
          }
          return occurrenceDays;
      }
docs: <p>
  The days. For a monthly schedule, this is one or more days of the month (1-31). For a weekly schedule, this is
  one or more days of the week (1-7, where 1 is Sunday). You can't specify this value with a daily schedule. If the
  occurrence is relative to the end of the month, you can specify only a single day.
  </p>
  
  @return The days. For a monthly schedule, this is one or more days of the month (1-31). For a weekly schedule,
  this is one or more days of the week (1-7, where 1 is Sunday). You can't specify this value with a daily
  schedule. If the occurrence is relative to the end of the month, you can specify only a single day.