default Principal filter(final Service service,
                             final Principal principal,
                             final RegisteredService registeredService,
                             final Set<String> scopes,
                             final OAuth20AccessToken accessToken) throws Throwable {
        return principal;
    }
Filter attributes.

@param service           the service
@param principal         the profile
@param registeredService the registered service
@param accessToken       the access token
@return the map
@throws Throwable the throwable
support/cas-server-support-oauth-core-api/src/main/java/org/apereo/cas/support/oauth/profile/OAuth20ProfileScopeToAttributesFilter.java