*/
internal interface DerAdapter<T> {
  /** Returns true if this adapter can read [header] in a choice. */
  fun matches(header: DerHeader): Boolean

  /**
   * Returns a value from this adapter.
   *
   * This must always return a value, though it doesn't necessarily need to consume data from
   * [reader]. For example, if the reader's peeked tag isn't readable by this adapter, it may return
   * a default value.
   *

  fun testMatchesSupportedAndroidSocketFactory(adapter: SocketAdapter) {
    assumeTrue(adapter is StandardAndroidSocketAdapter)

    assertTrue(adapter.matchesSocketFactory(context.socketFactory))
    assertNotNull(adapter.trustManager(context.socketFactory))
  }

  @ParameterizedTest
  @MethodSource("data")
  fun testDoesntMatchSupportedCustomSocketFactory(adapter: SocketAdapter) {
    assumeFalse(adapter is StandardAndroidSocketAdapter)

 * hint for further adapters to process.
 *
 * Types like ANY and CHOICE that don't have a consistent tag cannot use this.
 */
internal data class BasicDerAdapter<T>(
  private val name: String,
  /** The tag class this adapter expects, or -1 to match any tag class. */
  val tagClass: Int,
  /** The tag this adapter expects, or -1 to match any tag. */
  val tag: Long,

        },
      )
      .add(KotlinJsonAdapterFactory())
      .build()
  private val STORY_JSON_ADAPTER = MOSHI.adapter(Story::class.java)

  private val fileSystem = FileSystem.SYSTEM

  private fun readStory(source: BufferedSource): Story {
    return STORY_JSON_ADAPTER.fromJson(source)!!
  }

  private fun readStory(file: Path): Story {
    fileSystem.read(file) {
      return readStory(this)

import okhttp3.OkHttpClient
import okhttp3.Request

class ParseResponseWithMoshi {
  private val client = OkHttpClient()
  private val moshi = Moshi.Builder().build()
  private val gistJsonAdapter = moshi.adapter(Gist::class.java)

  fun run() {
    val request =
      Request.Builder()
        .url("https://api.github.com/gists/c2a7c39532239ff261be")
        .build()
    client.newCall(request).execute().use { response ->

  /** Names leading to the current location in the ASN.1 document. */
  private val path = mutableListOf<String>()

  /**
   * False unless we made a recursive call to [write] at the current stack frame. The explicit box
   * adapter can clear this to synthesize non-constructed values that are embedded in octet strings.
   */
  var constructed = false

  fun write(
    name: String,
    tagClass: Int,
    tag: Long,

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>commons-logging</groupId>
  <artifactId>commons-logging</artifactId>
  <name>Logging</name>
  <version>1.0.4</version>
  <description>Commons Logging is a thin adapter allowing configurable bridging to other,
    well known logging systems.</description>
  <url>http://jakarta.apache.org/commons/logging/</url>
  <issueManagement>
    <url>http://issues.apache.org/bugzilla/</url>
  </issueManagement>

Or it might be the case that you just prefer to take other courses because they adapt better to your learning style.

Some course providers ✨ [**sponsor FastAPI**](../help-fastapi.md#sponsor-the-author){.internal-link target=_blank} ✨, this ensures the continued and healthy **development** of FastAPI and its **ecosystem**.

# Full Stack FastAPI Template

Templates, while typically come with a specific setup, are designed to be flexible and customizable. This allows you to modify and adapt them to your project's requirements, making them an excellent starting point. 🏁

You can use this template to get started, as it includes a lot of the initial set up, security, database and some API endpoints already done for you.

  enum class DnsClass(val type: Int) {
    IPV4(TYPE_A),
    IPV6(TYPE_AAAA),
  }

  @ExperimentalOkHttpApi
  companion object {
    const val TYPE_A = 1
    const val TYPE_AAAA = 28

    /**
     * Adapt an AsyncDns implementation to Dns, waiting until onComplete is received
     * and returning results if available.
     */
    fun toDns(vararg asyncDns: AsyncDns): Dns =
      Dns { hostname ->