}

  @J2ktIncompatible
  @GwtIncompatible // Maps.fromProperties
  public void testFromProperties() throws IOException {
    Properties testProp = new Properties();

    Map<String, String> result = Maps.fromProperties(testProp);
    assertTrue(result.isEmpty());
    testProp.setProperty("first", "true");

    result = Maps.fromProperties(testProp);
    assertEquals("true", result.get("first"));

  }

  @J2ktIncompatible
  @GwtIncompatible // Maps.fromProperties
  public void testFromProperties() throws IOException {
    Properties testProp = new Properties();

    Map<String, String> result = Maps.fromProperties(testProp);
    assertTrue(result.isEmpty());
    testProp.setProperty("first", "true");

    result = Maps.fromProperties(testProp);
    assertEquals("true", result.get("first"));

   * @throws NullPointerException if any key or value in {@code properties} is null
   */
  @J2ktIncompatible
  @GwtIncompatible // java.util.Properties
  public static ImmutableMap<String, String> fromProperties(Properties properties) {
    ImmutableMap.Builder<String, String> builder = ImmutableMap.builder();

    for (Enumeration<?> e = properties.propertyNames(); e.hasMoreElements(); ) {
      /*