*
     * @return The scope of (transitive) dependencies that should be collected or {@code null} if none.
     * @since 3.0-alpha-3
     */
    public String getDependencyCollectionRequired() {
        return dependencyCollectionRequired;
    }

    // ----------------------------------------------------------------------
    // Project requirement

        assertEquals("jar", md.getGoal());
        assertEquals("mojo-description", md.getDescription());
        assertEquals("runtime", md.getDependencyResolutionRequired());
        assertEquals("test", md.getDependencyCollectionRequired());
        assertFalse(md.isAggregator(), "Expected " + md + ".isAggregator() to return false");
        assertFalse(md.isDirectInvocationOnly(), "Expected " + md + ".isDirectInvocationOnly() to return false");

            scopesToResolve.addAll(toScopes(mojoDescriptor.getDependencyResolutionRequired()));

            scopesToCollect.addAll(toScopes(mojoDescriptor.getDependencyCollectionRequired()));
        }
    }

    private Collection<String> toScopes(String classpath) {
        Collection<String> scopes = Collections.emptyList();

                                    mojoExecution.setLifecyclePhase(phase);
                                    n.addMojo(mojoExecution, execution.getPriority());
                                    if (mojoDescriptor.getDependencyCollectionRequired() != null
                                            || mojoDescriptor.getDependencyResolutionRequired() != null) {
                                        for (MavenProject p :