if (session.getCache() == null) {
            return null;
        } else {
            return new DefaultModelCache(session);
        }
    }

    private DefaultModelCache(RepositorySystemSession session) {
        this.session = session;
        this.cache = session.getCache();
    }

    @Override

        SessionScope scope = container.lookup(SessionScope.class);
        scope.enter();
        scope.seed(Session.class, s);
        scope.seed(InternalMavenSession.class, s);

        repoSession.setCache(new DefaultRepositoryCache());
        repoSession.setLocalRepositoryManager(new LegacyLocalRepositoryManager(localRepo));
        request.setRepositorySession(repoSession);
    }

    }

    //
    // Used by Tycho and will break users and force them to upgrade to Maven 3.1 so we should really leave
    // this here, possibly indefinitely.
    //
    public ArtifactResolutionRequest setCache(RepositoryCache cache) {
        return this;
    }