assertTrue(PLAIN_TEXT_UTF_8.is(ANY_TEXT_TYPE));
    assertTrue(PLAIN_TEXT_UTF_8.withoutParameters().is(ANY_TEXT_TYPE));
    assertFalse(JPEG.is(ANY_TEXT_TYPE));
    assertTrue(PLAIN_TEXT_UTF_8.is(PLAIN_TEXT_UTF_8));
    assertTrue(PLAIN_TEXT_UTF_8.is(PLAIN_TEXT_UTF_8.withoutParameters()));
    assertFalse(PLAIN_TEXT_UTF_8.withoutParameters().is(PLAIN_TEXT_UTF_8));
    assertFalse(PLAIN_TEXT_UTF_8.is(HTML_UTF_8));

 * folding and comments.
 *
 * <p>For media types that take a charset the predefined constants default to UTF-8 and have a
 * "_UTF_8" suffix. To get a version without a character set, use {@link #withoutParameters}.
 *
 * @since 12.0
 * @author Gregory Kick
 */
@GwtCompatible
@Immutable
@ElementTypesAreNonnullByDefault
public final class MediaType {
  private static final String CHARSET_ATTRIBUTE = "charset";