code: public static <K, V> Tuple2<K, V> fromEntry(Map.Entry<K, V> entry) {
          return new Tuple2<>(entry.getKey(), singletonHList(entry.getValue()));
      }
docs: Static factory method for creating <code>Tuple2</code>s from {@link java.util.Map.Entry}s.
  
  @param entry the map entry
  @param <K>   the key parameter type, and first (head) element type
  @param <V>   the value parameter type, and second element type
  @return the newly created Tuple2