Gets a C{dict} of valid method callables for the underlying service
        object.

def getMethods(self):
        """
        Gets a C{dict} of valid method callables for the underlying service
        object.
        """
        callables = {}

        for name in dir(self.service):
            method = getattr(self.service, name)

            if name.startswith('_') or not python.callable(method):
                continue

            callables[name] = method

        return callables