@Deprecated
public interface GraphConflictResolver {
    String ROLE = GraphConflictResolver.class.getName();

    /**
     * Cleanses the supplied graph by leaving only one directed versioned edge\
     * between any two nodes, if multiple exists. Uses scope relationships, defined
     * in <code>ArtifactScopeEnum</code>
     *
     * @param graph the "dirty" graph to be simplified via conflict resolution

    }

    @Override
    public void artifactDescriptorInvalid(RepositoryEvent event) {
        // The exception stack trace is not really interesting here
        // but the message itself may be quite details and span multiple
        // lines with errors in it, so only display it at debug level.
        String msg = "The POM for {} is invalid, transitive dependencies (if any) will not be available: {}";
        if (logger.isDebugEnabled()) {

            }
        }

        /*
         * NOTE: This is primarily to keep backward-compat with Maven 2.x which did not validate that dependencies are
         * unique within a single POM. Upon multiple declarations, 2.x just kept the last one but retained the order of
         * the first occurrence. So when we're in lenient/compat mode, we have to deal with such broken POMs and mimic

            is then described by additional elements.
            Projects should only list the license(s) that applies to the project
            and not the licenses that apply to dependencies.
            If multiple licenses are listed, it is assumed that the user can select
            any of them, not that they must accept all.
            ]]>
          </description>
          <association>
            <type>License</type>

        assertEquals(1, ((List<?>) pom.getValue("dependencies[1]/exclusions")).size());
    }

    /*MNG- 4008*/
    @Test
    void testMultipleFilters() throws Exception {
        PomTestWrapper pom = buildPom("multiple-filters");
        assertEquals(4, ((List<?>) pom.getValue("build/filters")).size());
    }

    /* MNG-4005: postponed to 3.1
    public void testValidationErrorUponNonUniqueDependencyKey()

import java.util.Set;

/**
 * Filter to only retain objects in the given scope or better. This implementation allows the accumulation of multiple
 * scopes and their associated implied scopes, so that the user can filter apply a series of implication rules in a
 * single step. This should be a more efficient implementation of multiple standard {@link ScopeArtifactFilter}
 * instances ORed together.
 *
 */

 * under the License.
 */
package org.apache.maven.lifecycle.mapping;

import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.Map;

/**
 * Lifecycle definition for a packaging (multiple packagings share the same lifecycle id = usually "default").
 */
public class Lifecycle {
    /**
     * Field id
     */
    private String id;

    /**
     * Field phases
     */

 * is typically also used for tests.
 */
class PathModularizationCache {
    /**
     * Module information for each JAR file or output directories.
     * Cached when first requested to avoid decoding the module descriptors multiple times.
     *
     * @see #getModuleInfo(Path)
     */
    private final Map<Path, PathModularization> moduleInfo;

    /**
     * Whether JAR files are modular. This map is redundant with {@link #moduleInfo},

        File artifactFile = new File(getBasedir(), pathOf(artifact));

        // We need to set the file here or the resolver will fail with an NPE, not fully equipped to deal
        // with multiple local repository implementations yet.
        artifact.setFile(artifactFile);

        return artifact;
    }

    public List<String> findVersions(Artifact artifact) {
        return Collections.emptyList();

     * <p>
     * Using ClassWorld to determine plugin/extensions realm parent classloaders gives m2e and integration test harness
     * flexibility to load multiple version of maven into dedicated classloaders without assuming state of jvm system
     * classloader.
     */
    private static final ClassLoader PARENT_CLASSLOADER = ClassWorld.class.getClassLoader();