InetAddress[] addresses = resolver.resolve(host);
        assertNotNull(addresses);
        assertTrue(addresses.length > 0);
    }

    public void test_resolve_invalid_brackets() {
        IdnDnsResolver resolver = new IdnDnsResolver();

        // Test empty brackets - should be treated as invalid hostname
        try {
            resolver.resolve("[]");

 * encoding for URL decoding.</p>
 *
 * <p>Example usage:</p>
 * <pre>
 * {@code
 * IdnDnsResolver resolver = new IdnDnsResolver();
 * resolver.setFlag(IDN.ALLOW_UNASSIGNED);
 * resolver.setEncoding("UTF-8");
 * InetAddress[] addresses = resolver.resolve("example.com");
 * }
 * </pre>
 *
 */
public class IdnDnsResolver implements DnsResolver {

    /** Flag for IDN conversion. */

    /**
     * Clones this resolver for usage in a forked resolution process. In general, implementors need not provide a deep
     * clone. The only requirement is that invocations of {@link #addRepository(Repository)} on the clone do not affect
     * the state of the original resolver and vice versa.
     *
     * @return The cloned resolver, never {@code null}.
     */
    ModelResolver newCopy();

        res = resolver.resolveConflicts(graph, ArtifactScopeEnum.runtime);

        assertNotNull(res, "null graph after resolver");
        assertNotNull(res.getVertices(), "no vertices in the resulting graph after resolver");
        assertNotNull(res.getExcidentEdges(v1), "no edges in the resulting graph after resolver");

        assertEquals(4, res.getVertices().size(), "wrong # of vertices in the resulting graph after resolver");

        /** The wrapped credential resolver. */
        private final TypicalLoginAssist<String, FessUserBean, FessUser>.CredentialResolver resolver;

        /**
         * Creates a new login credential resolver.
         *
         * @param resolver the credential resolver to wrap
         */
        public LoginCredentialResolver(final CredentialResolver resolver) {
            this.resolver = resolver;
        }

        /**

    @Nonnull
    Nature getNature();

    /**
     * Creates a version range resolver request using the session's repositories.
     *
     * @param session the session to use, must not be {@code null}
     * @param artifactCoordinates the artifact coordinates whose version range should be resolved, must not be {@code null}
     * @return the version range resolver request, never {@code null}
     */
    @Nonnull

import org.apache.maven.artifact.resolver.ArtifactNotFoundException;
import org.apache.maven.artifact.resolver.ArtifactResolutionException;
import org.apache.maven.artifact.resolver.ArtifactResolutionRequest;
import org.apache.maven.artifact.resolver.ArtifactResolutionResult;
import org.apache.maven.artifact.resolver.MultipleArtifactsNotFoundException;
import org.apache.maven.artifact.resolver.ResolutionErrorHandler;

    // ConflictResolver methods -----------------------------------------------

    /*
     * @see org.apache.maven.artifact.resolver.conflict.ConflictResolver#resolveConflict(org.apache.maven.artifact.resolver.ResolutionNode,
     *      org.apache.maven.artifact.resolver.ResolutionNode)
     */

    @Override
    public ResolutionNode resolveConflict(ResolutionNode node1, ResolutionNode node2) {

    // ConflictResolver methods -----------------------------------------------

    /*
     * @see org.apache.maven.artifact.resolver.conflict.ConflictResolver#resolveConflict(org.apache.maven.artifact.resolver.ResolutionNode,
     *      org.apache.maven.artifact.resolver.ResolutionNode)
     */

    @Override
    public ResolutionNode resolveConflict(ResolutionNode node1, ResolutionNode node2) {
        try {

    <dependency>
      <groupId>org.apache.maven.resolver</groupId>
      <artifactId>maven-resolver-api</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.maven.resolver</groupId>
      <artifactId>maven-resolver-spi</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.maven.resolver</groupId>
      <artifactId>maven-resolver-util</artifactId>
    </dependency>
    <dependency>