* @return this request for chaining, never {@code null}
         */
        @Nonnull
        public DependencyCollectorRequestBuilder rootArtifact(@Nullable Artifact rootArtifact) {
            this.rootArtifact = rootArtifact;
            return this;
        }

        /**
         * @param root The root dependency
         * @return this request for chaining, never {@code null}
         */
        @Nonnull

                    if ( updateSnapshotVersions )
                    {
                        java.util.Map<String, SnapshotVersion> versions = new java.util.LinkedHashMap<>();
                        // never convert from legacy to new format if either source or target is legacy format
                        if ( !v.getSnapshotVersions().isEmpty() )
                        {

                addToClasspath = false;
            }
            /*
             * If the test output directory provides some modules of its own, add them.
             * Except for this unusual case, tests should never be added to the module-path.
             */
            for (Map.Entry<Path, String> entry : testModules.getModuleNames().entrySet()) {
                if (!outputModules.containsModule(entry.getValue())) {

        sessionBuilder.setChecksumPolicy(request.getGlobalChecksumPolicy());
        sessionBuilder.setUpdatePolicy(
                request.isNoSnapshotUpdates()
                        ? RepositoryPolicy.UPDATE_POLICY_NEVER
                        : request.isUpdateSnapshots() ? RepositoryPolicy.UPDATE_POLICY_ALWAYS : null);

        int errorPolicy = 0;
        errorPolicy |= request.isCacheNotFound()

                                </requireJavaVersion>
                                <requireNoRepositories>
                                    <message>Best Practice is to never define repositories in pom.xml (use a repository
                                        manager instead).
                                    </message>
                                </requireNoRepositories>

          <version>1.0.0+</version>
          <description>
            The frequency for downloading updates - can be "always",
            "daily" (default), "interval:XXX" (in minutes) or "never"
            (only if it doesn't exist locally).
          </description>
          <type>String</type>
        </field>
        <field>
          <name>checksumPolicy</name>
          <version>1.0.0+</version>

        request = new DefaultMavenExecutionRequest();
        request.setLocalRepository(getLocalRepository());
        request.setNoSnapshotUpdates(true);
        assertEquals(
                RepositoryPolicy.UPDATE_POLICY_NEVER,
                systemSessionFactory.newRepositorySession(request).getUpdatePolicy());
    }

    @Test
    void isSnapshotUpdatesTest() throws InvalidRepositoryException {

     * @param parent The parent model, may be <code>null</code>.
     * @param childDirectory The directory defined in child model, may be <code>null</code>.
     * @return The path adjustment, can be empty but never <code>null</code>.
     */
    private String getChildPathAdjustment(Model child, Model parent, String childDirectory) {
        String adjustment = "";

        if (parent != null) {

                addToClasspath = false;
            }
            /*
             * If the test output directory provides some modules of its own, add them.
             * Except for this unusual case, tests should never be added to the module-path.
             */
            for (Map.Entry<Path, String> entry : testModules.getModuleNames().entrySet()) {
                if (!outputModules.containsModule(entry.getValue())) {