code: protected <Type> void addIfNotNull(final Array<Type> array, final Type object) {
          if (object != null) {
              array.add(object);
          }
      }
docs: Simple array utility.
  
  @param array will contain the object if it's not null.
  @param object if not null, will be added to the array.
  @param <Type> type of values stored in the array.