this.plugin = plugin;
    }

    public PluginNotFoundException(Plugin plugin, List<ArtifactRepository> remoteRepositories) {
        super(
                "Plugin could not be found, please check its coordinates for typos and ensure the required"
                        + " plugin repositories are defined in the POM",
                plugin.getGroupId(),
                plugin.getArtifactId(),

        private final List<RemoteRepository> repositories;

        private final int hashCode;

        CacheKey(Plugin plugin, List<RemoteRepository> repositories, RepositorySystemSession session) {
            groupId = plugin.getGroupId();
            artifactId = plugin.getArtifactId();
            version = plugin.getVersion();

            workspace = RepositoryUtils.getWorkspace(session);

 * under the License.
 */
package org.apache.maven.plugin;

import java.util.List;
import java.util.stream.Collectors;

import org.apache.maven.model.Plugin;

/**
 * Exception occurring trying to resolve a plugin.
 *
 */
public class PluginResolutionException extends Exception {

    private final Plugin plugin;

    public PluginResolutionException(Plugin plugin, Throwable cause) {
        super(

/**
 * Tests {@code Plugin}.
 *
 */
class PluginTest {

    @Test
    void testHashCodeNullSafe() {
        new Plugin().hashCode();
    }

    @Test
    void testEqualsNullSafe() {
        assertFalse(new Plugin().equals(null));

        new Plugin().equals(new Plugin());
    }

    @Test
    void testEqualsIdentity() {
        Plugin thing = new Plugin();

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.plugin;

import java.util.Collections;

import org.apache.maven.plugin.descriptor.MojoDescriptor;
import org.apache.maven.plugin.descriptor.Parameter;
import org.apache.maven.plugin.descriptor.PluginDescriptor;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;

import org.apache.maven.plugin.InvalidPluginDescriptorException;
import org.apache.maven.plugin.MojoNotFoundException;
import org.apache.maven.plugin.PluginDescriptorParsingException;
import org.apache.maven.plugin.PluginNotFoundException;
import org.apache.maven.plugin.PluginResolutionException;
import org.apache.maven.plugin.prefix.NoPluginFoundForPrefixException;
import org.apache.maven.plugin.version.PluginVersionResolutionException;

 */
package org.apache.maven.plugin;

import java.util.List;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.model.Plugin;
import org.apache.maven.project.MavenProject;
import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.graph.DependencyFilter;
import org.eclipse.aether.repository.RemoteRepository;

/**

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.plugin;

import java.util.List;

import org.apache.maven.execution.MavenSession;
import org.apache.maven.model.Plugin;
import org.apache.maven.plugin.descriptor.MojoDescriptor;
import org.apache.maven.plugin.descriptor.PluginDescriptor;
import org.codehaus.plexus.classworlds.realm.ClassRealm;

    }

    public static int pluginHashCode(Plugin plugin) {
        int hash = 17;

        hash = hash * 31 + Objects.hashCode(plugin.getGroupId());
        hash = hash * 31 + Objects.hashCode(plugin.getArtifactId());
        hash = hash * 31 + Objects.hashCode(plugin.getVersion());

        hash = hash * 31 + (plugin.isExtensions() ? 1 : 0);

        for (Dependency dependency : plugin.getDependencies()) {

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.plugin;

import java.util.List;
import java.util.Map;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.model.Plugin;
import org.apache.maven.project.MavenProject;
import org.codehaus.plexus.classworlds.realm.ClassRealm;
import org.eclipse.aether.RepositorySystemSession;