import org.apache.maven.api.annotations.ThreadSafe;

/**
 * A container for data that is specific to a session.
 * All components may use this storage to associate arbitrary data with a session.
 * <p>
 * Unlike a cache, this session data is not subject to purging. For this same reason, session data should also not be
 * abused as a cache (i.e. for storing values that can be re-calculated) to avoid memory exhaustion.

        while (trace != null) {
            Object data = trace.getData();
            if (data instanceof CollectStepData) {
                collectStepTrace = (CollectStepData) data;
            } else if (data instanceof ArtifactDescriptorRequest) {
                artifactDescriptorRequest = (ArtifactDescriptorRequest) data;
            } else if (data instanceof ArtifactRequest) {

        }
    }

    private final PluginInfo pluginInfo;

    PluginsMetadata(PluginInfo pluginInfo, Date timestamp) {
        super(createRepositoryMetadata(pluginInfo), (Path) null, timestamp);
        this.pluginInfo = pluginInfo;
    }

    PluginsMetadata(PluginInfo pluginInfo, Path path, Date timestamp) {
        super(createRepositoryMetadata(pluginInfo), path, timestamp);
        this.pluginInfo = pluginInfo;
    }

final class VersionsMetadata extends MavenMetadata {

    private final Artifact artifact;

    VersionsMetadata(Artifact artifact, Date timestamp) {
        super(createRepositoryMetadata(artifact), (Path) null, timestamp);
        this.artifact = artifact;
    }

    VersionsMetadata(Artifact artifact, Path path, Date timestamp) {
        super(createRepositoryMetadata(artifact), path, timestamp);
        this.artifact = artifact;
    }

 * under the License.
 */
package org.apache.maven.internal.impl.resolver;

import java.nio.file.Path;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;

import org.apache.maven.api.metadata.Metadata;
import org.eclipse.aether.artifact.Artifact;

/**
 */
abstract class MavenSnapshotMetadata extends MavenMetadata {
    static final String SNAPSHOT = "SNAPSHOT";

     *
     * @return The start time of the build or {@code null} if unknown.
     */
    Date getBuildStartTime();

    /**
     * Sets the start time of the build.
     *
     * @param buildStartTime The start time of the build, may be {@code null}.
     */
    void setBuildStartTime(Date buildStartTime);

    RepositorySystemSession getRepositorySession();

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

import java.util.Calendar;
import java.util.Date;

/**
 * Describes a set of policies for a repository to use under certain conditions.
 *
 * @deprecated Avoid use of this type, if you need access to local repository use repository system session instead.
 */

import org.apache.maven.api.services.ModelBuilderRequest;
import org.apache.maven.api.services.ModelProblemCollector;
import org.apache.maven.api.services.model.ModelBuildingEvent;

/**
 * Holds data relevant for a model building event.
 */
record DefaultModelBuildingEvent(
        Model model, Consumer<Model> update, ModelBuilderRequest request, ModelProblemCollector problems)

EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

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

import org.apache.maven.plugin.MojoExecution;
import org.apache.maven.project.MavenProject;

/**
 * Holds data relevant for an execution event.
 *
 */
public interface ExecutionEvent {

    /**
     * The possible types of execution events.
     */
    enum Type {
        ProjectDiscoveryStarted,