code: public static <K, V> Entry<K, V> entry(final K key, final V value) {
          return new SimpleImmutableEntry<K, V>(key, value);
      }
docs: Creates a Map.Entry out of the given key and value. Commonly used in
  conjunction with map(Entry...)
  
  @param <K> the key type
  @param <V> the value type
  @param key
  the key
  @param value
  the value
  @return a Map.Entry object with the given key and value