Checks whether the caller has access to the provided "web resource" using the given methods,
as specified by section 13.8 of the Servlet specification.
HttpMessageContext contains all of the per-request state information and encapsulates the client request,
server response, container handler for authentication callbacks, and the subject representing the caller.
This class is an implementation of the HttpMessageContext interface that
can be subclassed by developers wishing to provide extra or different
functionality.