fun <T : Any> Request.Builder.commonTag(
  type: KClass<T>,
  tag: T?,
) = apply {
  if (tag == null) {
    if (tags.isNotEmpty()) {
      (tags as MutableMap).remove(type)
    }
  } else {
    val mutableTags: MutableMap<KClass<*>, Any> =
      when {
        tags.isEmpty() -> mutableMapOf<KClass<*>, Any>().also { tags = it }
        else -> tags as MutableMap<KClass<*>, Any>
      }
    mutableTags[type] = tag

import kotlin.reflect.KClass
import okhttp3.internal.concurrent.TaskRunner
import okhttp3.internal.http2.Http2

object OkHttpDebugLogging {
  // Keep references to loggers to prevent their configuration from being GC'd.
  private val configuredLoggers = CopyOnWriteArraySet<Logger>()

  fun enableHttp2() = enable(Http2::class)

  fun enableTaskRunner() = enable(TaskRunner::class)

  fun logHandler() =

//
// Rules
// 1. an extension should either require no type parameters, a single reifeid type parameter, at call site
// 2. all type parameters must all be reifeid or values (TypeOf, KClass or Class)
// 3. when overloading, prefer TypeOf over Class
// 4. in case the policy forbids your overloads, discuss
private
fun kotlinExtensionFunctionsFor(type: ApiType, sinceSupplier: (String) -> String?): Sequence<KotlinExtensionFunction> =

import java.util.concurrent.ConcurrentMap
import kotlin.reflect.KClass

/**
 * [KtFirAnalysisSessionProvider] keeps [KtFirAnalysisSession]s in a cache, which are actively invalidated with their associated underlying
 * [LLFirSession][org.jetbrains.kotlin.analysis.low.level.api.fir.sessions.LLFirSession]s.
 */
internal class KtFirAnalysisSessionProvider(project: Project) : KtAnalysisSessionProvider(project) {

  @JvmName("reifiedTag")
  inline fun <reified T : Any> tag(): T? = tag(T::class)

  /** Returns the tag attached with [type] as a key, or null if no tag is attached with that key. */
  fun <T : Any> tag(type: KClass<T>): T? = type.java.cast(tags[type])

  /**
   * Returns the tag attached with `Object.class` as a key, or null if no tag is attached with
   * that key.
   *

  public void testIterator() {
    runTest("analysis/analysis-api/testData/symbols/symbolByFqName/iterator.kt");
  }

  @Test
  @TestMetadata("kclass.kt")
  public void testKclass() {
    runTest("analysis/analysis-api/testData/symbols/symbolByFqName/kclass.kt");
  }

  @Test
  @TestMetadata("listOf.kt")
  public void testListOf() {
    runTest("analysis/analysis-api/testData/symbols/symbolByFqName/listOf.kt");

                    )
                )
            }
        }
    }
}

private sealed class FqNameInterpretation {

    data class FqNameInterpretationAsPackage(val packageFqName: FqName) : FqNameInterpretation()
    data class FqNameInterpretationAsClassId(val classId: ClassId) : FqNameInterpretation()
    data class FqNameInterpretationAsCallableId(val callableId: CallableId) : FqNameInterpretation()

    companion object {

      ByteString::class to OCTET_STRING,
      Unit::class to NULL,
      Nothing::class to OBJECT_IDENTIFIER,
      Nothing::class to UTF8_STRING,
      String::class to PRINTABLE_STRING,
      Nothing::class to IA5_STRING,
      Nothing::class to UTC_TIME,
      Long::class to GENERALIZED_TIME,
      AnyValue::class to ANY_VALUE,
    )

  fun any(

    val requestA = builder.tag(String::class, "a").build()
    val requestB = builder.tag(String::class, "b").build()
    val requestC = requestA.newBuilder().tag(String::class, "c").build()
    assertThat(requestA.tag(String::class)).isSameAs("a")
    assertThat(requestB.tag(String::class)).isSameAs("b")
    assertThat(requestC.tag(String::class)).isSameAs("c")
  }

  @Test
  fun requestToStringRedactsSensitiveHeaders() {

    }

    private data class TypeArgumentMapping(
        val owner: ClassifierDescriptorWithTypeParameters,
        val mapping: Map<TypeParameterDescriptor, BoundTypeArgument>
    )

    private data class BoundTypeArgument(val type: KotlinType, val variance: Variance)