ResourceResolver is a generic callback interface for resolving URIs
referring to resources.
request- Details of the request, including the requested URI and other relevant information
IResourcerepresenting the retrieved resource, or null if the URI is not recognized. Returning null generally results in the system attempting to resolve the URI using a fallback resolution method. The type of
IResourcereturned must be consistent with the
Natureof the resource request. In particular, if the request is for a plain text resource, then the returned
IResourcemust be a