How to use

uniqueIterable

method

in

org.apache.commons.collections4.IterableUtils

/**
 * Returns a new FluentIterable whose iterator will return a unique view
 * of this iterable.
 *
 * @return a new iterable, providing a unique view of this iterable
 */
public FluentIterable<E> unique() {
  return of(IterableUtils.uniqueIterable(iterable));
}