val settings = Settings()
    settings[Settings.HEADER_TABLE_SIZE] = 8096
    assertThat(settings.headerTableSize).isEqualTo(8096)
    assertThat(settings.getEnablePush(true)).isTrue()
    settings[Settings.ENABLE_PUSH] = 1
    assertThat(settings.getEnablePush(false)).isTrue()
    settings.clear()
    assertThat(settings.getMaxConcurrentStreams()).isEqualTo(Int.MAX_VALUE)
    settings[Settings.MAX_CONCURRENT_STREAMS] = 75

  operator fun get(id: Int): Int = values[id]

  /** Returns the number of settings that have values assigned. */
  fun size(): Int = Integer.bitCount(set)

  // TODO: honor this setting.
  fun getEnablePush(defaultValue: Boolean): Boolean {
    val bit = 1 shl ENABLE_PUSH
    return if (bit and set != 0) values[ENABLE_PUSH] == 1 else defaultValue
  }

  fun getMaxConcurrentStreams(): Int {