.dependencies(deps)
                        .build();

                plugins.put(key, plugin);
            }
        }
    }

    private static String getExecutionId(Plugin plugin, String goal) {
        Set<String> existingIds = plugin != null
                ? plugin.getExecutions().stream().map(PluginExecution::getId).collect(Collectors.toSet())
                : Set.of();

    }

    @Override
    public void flush() {
        cache.clear();
    }

    protected static int pluginHashCode(Plugin plugin) {
        return CacheUtils.pluginHashCode(plugin);
    }

    protected static boolean pluginEquals(Plugin a, Plugin b) {
        return CacheUtils.pluginEquals(a, b);
    }

    @Override

                    Predicate<Plugin> isPluginPartOfRequestScope = plugin -> projectsInRequestScope.stream()
                            .anyMatch(project -> project.getGroupId().equals(plugin.getGroupId())
                                    && project.getArtifactId().equals(plugin.getArtifactId())
                                    && project.getVersion().equals(plugin.getVersion()));

import org.apache.maven.internal.impl.DefaultMojoExecution;
import org.apache.maven.internal.impl.InternalMavenSession;
import org.apache.maven.model.Plugin;
import org.apache.maven.plugin.descriptor.MojoDescriptor;
import org.apache.maven.plugin.descriptor.PluginDescriptor;
import org.apache.maven.plugin.logging.Log;
import org.apache.maven.project.MavenProject;
import org.codehaus.plexus.classworlds.realm.ClassRealm;

- component not found

Plugins:
- plugin metadata missing
- plugin metadata retrieval problem
- plugin artifact missing
- plugin artifact retrieval problem
- plugin dependency metadata missing
- plugin dependency metadata retrieval problem
- plugin configuration problem
- plugin execution failure due to something that is known to possibly go wrong (like compilation failure)

    }

    protected static int pluginHashCode(Plugin plugin) {
        return CacheUtils.pluginHashCode(plugin);
    }

    protected static boolean pluginEquals(Plugin a, Plugin b) {
        return CacheUtils.pluginEquals(a, b);
    }

    @Override
    public void register(MavenProject project, Key key, CacheRecord record) {
        // default cache does not track plugin usage
    }

    @Override

import org.apache.maven.model.Plugin;
import org.apache.maven.model.PluginExecution;
import org.apache.maven.plugin.BuildPluginManager;
import org.apache.maven.plugin.InvalidPluginDescriptorException;
import org.apache.maven.plugin.MojoExecution;
import org.apache.maven.plugin.MojoNotFoundException;
import org.apache.maven.plugin.PluginDescriptorParsingException;
import org.apache.maven.plugin.PluginNotFoundException;

import org.apache.maven.model.Plugin;

/**
 * PluginArtifact
 */
public class PluginArtifact extends DefaultArtifact implements ArtifactWithDependencies {
    private Plugin plugin;

    public PluginArtifact(Plugin plugin, Artifact pluginArtifact) {
        super(
                plugin.getGroupId(),
                plugin.getArtifactId(),
                plugin.getVersion(),
                null,

                        for (Plugin managedPlugin : pluginMgmt.getPlugins()) {
                            Object key = getPluginKey(managedPlugin);
                            Plugin addedPlugin = added.get(key);
                            if (addedPlugin != null) {
                                Plugin plugin = managedPlugin.clone();
                                mergePlugin(plugin, addedPlugin, sourceDominant, Collections.emptyMap());

    }

    @Nonnull
    default DependencyCoordinates create(@Nonnull Session session, Plugin plugin) {
        // TODO: hard coded string
        return create(DependencyCoordinatesFactoryRequest.build(
                session, plugin.getGroupId(), plugin.getArtifactId(), plugin.getVersion(), null, null, "maven-plugin"));
    }

    @Nonnull