// expect Project B, C
        assertEquals(2, schedulableNewProcesses.size());
        assertEquals(1, graph.getFinishedProjects().size());

        graph.markAsFinished(ProjectDependencyGraphStub.A);
        // still only  A
        assertEquals(1, graph.getFinishedProjects().size());

        Set<MavenProject> unfinishedProjects = graph.getUnfinishedProjects();
        assertEquals(5, unfinishedProjects.size());

        return unfinished;
    }

    /**
     * @return set of projects that have been successfully processed by the build.
     */
    protected Set<MavenProject> getFinishedProjects() {
        return finishedProjects;
    }

    protected ProjectBuildList getProjectBuilds() {
        return projectBuilds;
    }

    /**