code: public List<Integer> getIntegers(String name, String delimiter) {
          List<String> strings = getStrings(name, delimiter);
  
          List<Integer> ints = new ArrayList<>(strings.size());
          for (String value : strings) {
              try {
                  int i = Integer.parseInt(value);
                  ints.add(i);
              } catch (NumberFormatException e) {
              }
          }
  
          return Collections.unmodifiableList(ints);
      }
docs: Returns a list of integers from the specified name using the specified delimiter.
  
  @param name
  @param delimiter
  @return list of integers