* filters out currently built artifacts, as events are fired for them as well, but their resolved artifact
     * file would point to checked out source-tree, not the local repository.
     * <p>
     * Visible for testing.
     */
    static boolean isLocalRepositoryArtifactOrMissing(RepositorySystemSession session, Artifact artifact) {

                extensionRecord = setupExtensionsRealm(project, plugin, repositorySession);
            } catch (PluginManagerException e) {
                // extensions realm is expected to be fully setup at this point
                // any exception means a problem in maven code, not a user error
                throw new IllegalStateException(e);
            }

            ClassRealm pluginRealm = extensionRecord.getRealm();

import org.apache.maven.execution.MojoExecutionEvent;
import org.apache.maven.plugin.MojoExecutionException;

/**
 * Extension point that allows build extensions observe and possibly veto mojo executions.
 * <p>
 * Unlike {@link org.apache.maven.execution.MojoExecutionListener}, this extension point does not
 * trigger instantiation of the component, hence "weak" class name prefix. Only applies to mojo execution
 * scoped components.
 * </p>

 * decorate default functionality or skip some executions
 */
public interface MojosExecutionStrategy {

    /**
     * Entry point to the execution strategy
     *
     * @param mojos             list of mojos representing a project build
     * @param session           current session

 *
 *
 */
@Deprecated
public class MetadataGraph {
    /** all graph nodes */
    Collection<MetadataGraphNode> nodes;

    /** entry point for tree-like structures */
    MetadataGraphNode entry;

    public MetadataGraph(MetadataGraphNode entry) {
        this();

        this.entry = entry;
    }

    public MetadataGraph() {

 * invocations of Maven.
 */
public interface BuildResumptionDataRepository {
    /**
     * Persists any data needed to resume the build at a later point in time, using a new Maven invocation. This method
     * may also decide it is not needed or meaningful to persist such data, and return <code>false</code> to indicate
     * so.
     *

    /**
     * Gets the identifier of the project that could not be built. The general format of the identifier is {@code
     * <groupId>:<artifactId>:<version>} but some of these coordinates may still be unknown at the point the exception
     * is thrown so this information is merely meant to assist the user.
     *
     * @return The identifier of the project or an empty string if not known, never {@code null}.
     */
    String getProjectId();

                cpc.add(amd);
            } else {
                ClasspathGraphVisitor v = new ClasspathGraphVisitor(cleanGraph, cpc);
                MetadataGraphVertex entry = cleanGraph.getEntry();
                // entry point
                v.visit(entry);
            }

            return cpc;
        } catch (GraphConflictResolutionException e) {
            throw new MetadataGraphTransformationException(e);
        }
    }

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

import org.apache.maven.plugin.MojoExecutionException;

/**
 * <p>
 * Extension point that allows build extensions observe and possibly veto mojo executions.
 * </p>
 * <strong>Note:</strong> This interface is part of work in progress and can be changed or removed without notice.
 *

/**
 *
 */
@Named
@Singleton
@Deprecated
public class DefaultGraphConflictResolutionPolicy implements GraphConflictResolutionPolicy {
    /**
     * artifact, closer to the entry point, is selected
     */
    @Configuration(name = "closer-first", value = "true")
    private boolean closerFirst = true;

    /**
     * newer artifact is selected
     */