*/
  open fun isDuplex(): Boolean = false

  /**
   * Returns true if this body expects at most one call to [writeTo] and can be transmitted
   * at most once. This is typically used when writing the request body is destructive and it is not
   * possible to recreate the request body after it has been sent.
   *
   * This method returns false unless it is overridden by a subclass.
   *

     * @param p The pooled object to destroy
     * @throws Exception if destruction fails
     */
    @Override
    public void destroyObject(final PooledObject<T> p) throws Exception {
        if (onDestroyListener != null) {
            onDestroyListener.onDestroy(p);
        }
    }

    /**
     * Listener interface for handling object destruction events.
     * @param <T> The type of the pooled object
     */

* Specific HTTP headers or all of them with the wildcard `"*"`.

{* ../../docs_src/cors/tutorial001.py hl[2,6:11,13:19] *}


The default parameters used by the `CORSMiddleware` implementation are restrictive by default, so you'll need to explicitly enable particular origins, methods, or headers, in order for browsers to be permitted to use them in a Cross-Domain context.

The following arguments are supported: