public void testParse_useConstants() throws Exception {
    for (MediaType constant : getConstants()) {
      assertThat(MediaType.parse(constant.toString())).isSameInstanceAs(constant);
    }
  }

  @J2ktIncompatible
  @GwtIncompatible // reflection
  public void testCreate_useConstants() throws Exception {
    for (MediaType constant : getConstants()) {
      assertThat(
              MediaType.create(constant.type(), constant.subtype())

   * either the field is absent or cannot be parsed as a date.
   */
  @Suppress("NewApi")
  @IgnoreJRERequirement // Only programs that already have Instant will use this.
  fun getInstant(name: String): Instant? = getDate(name)?.toInstant()

  /** Returns the number of field values. */
  @get:JvmName("size")
  val size: Int
    get() = namesAndValues.size / 2

  @JvmName("-deprecated_size")

  fun headers() {
    var headers: Headers = headersOf("", "")
    headers = mapOf("" to "").toHeaders()
    val get: String? = headers[""]
    val date: Date? = headers.getDate("")
    val instant: Instant? = headers.getInstant("")
    val size: Int = headers.size
    val name: String = headers.name(0)
    val value: String = headers.value(0)
    val names: Set<String> = headers.names()
    val values: List<String> = headers.values("")

	public final fun byteCount ()J
	public fun equals (Ljava/lang/Object;)Z
	public final fun get (Ljava/lang/String;)Ljava/lang/String;
	public final fun getDate (Ljava/lang/String;)Ljava/util/Date;
	public final fun getInstant (Ljava/lang/String;)Ljava/time/Instant;
	public fun hashCode ()I
	public fun iterator ()Ljava/util/Iterator;
	public final fun name (I)Ljava/lang/String;
	public final fun names ()Ljava/util/Set;

	public final fun byteCount ()J
	public fun equals (Ljava/lang/Object;)Z
	public final fun get (Ljava/lang/String;)Ljava/lang/String;
	public final fun getDate (Ljava/lang/String;)Ljava/util/Date;
	public final fun getInstant (Ljava/lang/String;)Ljava/time/Instant;
	public fun hashCode ()I
	public fun iterator ()Ljava/util/Iterator;
	public final fun name (I)Ljava/lang/String;
	public final fun names ()Ljava/util/Set;