code: public static <K, V> Map<K, V> newHashMap(Map<? extends K, ? extends V> m) {
      return new HashMap<K, V>(m);
    }
docs: <p>
  newHashMap.
  </p>
  
  @param m a {@link java.util.Map} object.
  @param <K> a K object.
  @param <V> a V object.
  @return a {@link java.util.Map} object.