Represents a request for On Demand Resources (ODR). It's an AsyncOperation and can be yielded in a coroutine.
NOTE: only available on iOS.
Creating an OnDemandResourcesRequest is equivalent to calling NSBundleResourceRequest.beginAccessingResourcesWithCompletionHandler. The request will keep the on demand resource alive until either Dispose() is called or the request object is collected by a garbage collector, which is the equivalent of calling NSBundleResourceRequest.endAccessingResources class.
static class Loader
{
    public static IEnumerator LoadAsset(string resourceName)
    {
        // Create the request
        var request = OnDemandResources.PreloadAsync(new string[] { "Asset's ODR tag" });
        // Wait until request is completed
        yield return request;
        // Check for errors
        if (request.error != null)
            throw new Exception("ODR request failed: " + request.error);
        // Get path to the resource and use it
        var path = request.GetResourcePath(resourceName);
        // Call Dispose() when resource is no longer needed.
        request.Dispose();
    }
}
| error | Returns an error after operation is complete. | 
| loadingPriority | Sets the priority for request. | 
| Dispose | Release all resources kept alive by On Demand Resources (ODR) request. | 
| GetResourcePath | Gets file system's path to the resource available in On Demand Resources (ODR) request. | 
| allowSceneActivation | Allow scenes to be activated as soon as it is ready. | 
| isDone | Has the operation finished? (Read Only) | 
| priority | Priority lets you tweak in which order async operation calls will be performed. | 
| progress | What's the operation's progress. (Read Only) |