This accessor is useful when developing in DPML- it allows you to issue asynchronous requests. If you are developing an accessor or using a scriping language you may find it easier to use the underlying asynchronous request methods in the NKF API.

The request that is issued is based upon the URI supplied in the uri argument. Additional arguments can be passed by placing them onto the async request.

The resulting resource returned by this request is not the result of the subrequest- this may not be available yet. It is a handle which can be passed to the join accessor if you want to wait for the result.