// TODO lifecycles being executed
// TODO what runs in each phase
// TODO plugins that need downloading
// TODO project dependencies that need downloading
// TODO unfortunately the plugins need to be downloaded in order to get the plugin.xml file. need to externalize this
//      from the plugin archive.
// TODO this will be the class that people get in IDEs to modify

/**
 * MavenExecutionPlan
 */

    public Lifecycle get(String phase) {
        return getPhaseToLifecycleMap().get(phase);
    }

    /**
     * We use this to map all phases to the lifecycle that contains it. This is used so that a user can specify the
     * phase they want to execute and we can easily determine what lifecycle we need to run.
     *
     * @return A map of lifecycles, indexed on id
     */
    public Map<String, Lifecycle> getPhaseToLifecycleMap() {

    /**
     * OS family that can be tested for. {@value}
     */
    private static final String FAMILY_OS2 = "os/2";

    /**
     * OS family that can be tested for. {@value}
     */
    private static final String FAMILY_NETWARE = "netware";

    /**
     * OS family that can be tested for. {@value}
     */
    private static final String FAMILY_DOS = "dos";

    /**
     * OS family that can be tested for. {@value}

    private final String lifecyclePhase;

    /**
     * Creates a new exception to indicate that the specified lifecycle phase is not defined by any known lifecycle.
     *
     * @param message The detail message, may be {@code null}.
     * @param lifecyclePhase The name of the lifecycle phase that could not be located, may be {@code null}.
     */

                return true;
            }
            if (o == null || getClass() != o.getClass()) {
                return false;
            }
            DefaultVersion that = (DefaultVersion) o;
            return delegate.equals(that.delegate);
        }

        @Override
        public int hashCode() {
            return delegate.hashCode();
        }

        @Override

    /**
     * Gets the problems that were encountered during the settings building. Note that only problems of severity
     * {@link BuilderProblem.Severity#WARNING} and below are reported here. Problems with a higher severity level cause
     * the settings builder to fail with a {@link ToolchainsBuilderException}.
     *

import org.apache.maven.plugin.version.PluginVersionResolutionException;
import org.apache.maven.project.MavenProject;

/**
 * A facade that provides lifecycle services to components outside maven core.
 * <p>
 * Note that this component is not normally used from within core itself.
 *
 */
@Named
@Singleton
public class DefaultLifecycleExecutor implements LifecycleExecutor {

 * model inheritance.
 *
 */
public interface ModelUrlNormalizer {

    /**
     * Normalizes the well-known URLs of the specified model.
     *
     * @param model The model whose URLs should be normalized, may be {@code null}.
     * @param request The model building request that holds further settings, must not be {@code null}.

 */
package org.apache.maven.api.services.model;

import java.util.Properties;

import org.apache.maven.api.services.ModelBuilderRequest;

/**
 * Allows a fixed set of properties that are valid inside a version and that could be overwritten for example on the
 * commandline
 */
public interface ModelVersionProcessor {

    /**
     * @param property the property to check

import org.eclipse.aether.graph.Dependency;

import static java.util.Objects.requireNonNull;

/**
 * A dependency traverser that excludes the dependencies of fat artifacts from the traversal. Fat artifacts are
 * artifacts that have the property {@link MavenArtifactProperties#INCLUDES_DEPENDENCIES} set to
 * {@code true}.
 *
 * @see org.eclipse.aether.artifact.Artifact#getProperties()