'Verifies that the action is valid on the target in this context.
:param context: Glance request context
:param action: String representing the action to be checked
:param target: Dictionary representing the object of the action.
:raises: `glance.common.exception.Forbidden`
:returns: A non-False value if access is allowed.'

def enforce(self, context, action, target):

    return super(Enforcer, self).enforce(action, target, context.to_policy_values(), do_raise=True, exc=exception.Forbidden, action=action)
