How do you Extend RemoteObject?

Someone saw this old thread from the FlexCoders list and e-mailed me one solution. This was the question:

I'd like to have a custom remoteobject for specific error handling and logging. However, if I try to extend remoteobject:

public dynamic class CustomRemoteObject extends RemoteObject { ... }

It is completely unusable in an mxml file. If I try to declare any inside of it, I get a "could not resolve to a component implemenation":

<components:CustomRemoteObject>
<mx:method ...> <!-- compiler error -->
</components:CustomRemoteObject>

I know that is special-cased by the compiler because it doesn't have a component implementation. Is there a way to use custom remote objects in mxml with the mx:method tag? If not, is there a way to use custom remote objects in mxml and have callbacks at the method-level? Is remoteobject not supposed to be extended this way?

My answer at the time was to try this:

However, I doubt that works. As the original poster had stated, the method tag appears to be a compiler kludge. You can't extend RemoteObject and specify the methods in the same way. The method tags are not specified as an array and method is not a property on the RemoteObject class. I bet the compiler turns all the method tags into an operations array, although I haven't checked actual generated code.

The real solution to generating is to review the generated code from the Flex Compiler in a template that uses RemoteObject w/ multiple method tags and then figure out what it does; then replicate that approach in your own ActionSript.