when (typeHint) {
        ObjectIdentifiers.SUBJECT_ALTERNATIVE_NAME -> subjectAlternativeName
        ObjectIdentifiers.BASIC_CONSTRAINTS -> basicConstraints
        else -> null
      }
    }.withExplicitBox(
      tagClass = Adapters.OCTET_STRING.tagClass,
      tag = Adapters.OCTET_STRING.tag,
      forceConstructed = false,
    )

  /**
   * ```
   * Extension ::= SEQUENCE  {

   *     declared to have non-constructed values, like OCTET STRING values.
   */
  @Suppress("UNCHECKED_CAST") // read() produces a single element of the expected type.
  fun withExplicitBox(
    tagClass: Int = DerHeader.TAG_CLASS_CONTEXT_SPECIFIC,
    tag: Long,
    forceConstructed: Boolean? = null,
  ): BasicDerAdapter<T> {
    val codec =
      object : BasicDerAdapter.Codec<T> {

    assertThat(string).isEqualTo("hi")
  }

  @Test fun `explicit tag`() {
    // [5] EXPLICIT UTF8String
    val bytes = "A5040C026869".decodeHex()
    val explicitAdapter = Adapters.UTF8_STRING.withExplicitBox(tag = 5L)
    assertThat(explicitAdapter.fromDer(bytes)).isEqualTo("hi")
    assertThat(explicitAdapter.toDer("hi")).isEqualTo(bytes)
  }

  @Test fun `boolean`() {
    val bytes = "0101FF".decodeHex()