* returned either this request, or the request upon which this request was derived with
   * [newBuilder].
   *
   * @suppress this method breaks Dokka! https://github.com/Kotlin/dokka/issues/2473
   */
  fun tag(): Any? = tag<Any>()

  /**
   * Returns the tag attached with [type] as a key, or null if no tag is attached with that
   * key.
   */

     *
     * This is **not** an actual type check, it is just an opinionated approximation.
     * The main guideline was K1 KDoc resolve.
     *
     * This check might change in the future, as Dokka team advances with KDoc rules.
     */
    private fun KtAnalysisSession.canBeReferencedAsExtensionOn(symbol: KtCallableSymbol, actualReceiverType: KtType): Boolean {