@Singleton
@Named
public final class DefaultPluginValidationManager extends AbstractEventSpy implements PluginValidationManager {
    /**
     * The collection of "G:A" combinations that do NOT belong to Maven Core, hence, should be excluded from
     * "expected in provided scope" type of checks.
     */
    static final Collection<String> EXPECTED_PROVIDED_SCOPE_EXCLUSIONS_GA =
            Collections.unmodifiableCollection(Arrays.asList(

     * Note: Project properties contains properties injected from profiles, if applicable. Their precedence is
     * {@code profile > project}, hence active profile property may override project property.
     * <p>
     * The caller of this method should decide whether there is a project in scope (hence, a project instance
     * needs to be passed) or not.
     *
     * @param project {@link Project} or {@code null}.

    /**
     * Copies the values from the given toolchains into the specified execution request. This method will replace any
     * existing values in the execution request that are controlled by the toolchains. Hence, it is expected that this
     * method is called on a new/empty execution request before the caller mutates it to fit its needs.
     *
     * @param request The execution request to populate, must not be {@code null}.

        /*
         * NOTE: This should be considered a quirk to support interop with Maven's legacy ArtifactDeployer which
         * processes one artifact at a time and hence cannot associate the artifacts from the same project to use the
         * same version index. Allowing the caller to pass in metadata from a previous deployment allows to re-establish

/**
 * Collects problems that are encountered during model building. The primary purpose of this component is to account for
 * the fact that the problem reporter has/should not have information about the calling context and hence cannot provide
 * an expressive source hint for the model problem. Instead, the source hint is configured by the model builder before

        snapshots = new LinkedHashMap<>();

        /*
         * NOTE: This should be considered a quirk to support interop with Maven's legacy ArtifactDeployer which
         * processes one artifact at a time and hence cannot associate the artifacts from the same project to use the
         * same timestamp+buildno for the snapshot versions. Allowing the caller to pass in metadata from a previous

/**
 * Collects problems that are encountered during model building. The primary purpose of this component is to account for
 * the fact that the problem reporter has/should not have information about the calling context and hence cannot provide
 * an expressive source hint for the model problem. Instead, the source hint is configured by the model builder before

    }

    /**
     * Returns the project artifacts as immutable list. Elements are the project POM artifact and the artifact
     * produced by this project build, if applicable. Hence, the returned list may have one or two elements
     * (never less than 1, never more than 2), depending on project packaging.
     * <p>

/**
 * A simple memorizing {@link Supplier} of {@link RepositorySystem} instance, that on first call
 * supplies lazily constructed instance, and on each subsequent call same instance. Hence, this instance should be
 * thrown away immediately once repository system was created and there is no need for more instances. If new

 */
package org.apache.maven.execution;

/**
 * Defines events that Maven fires during a build. <strong>Warning:</strong> This interface might be extended in future
 * Maven versions to support further events. Hence it is strongly recommended to derive custom listeners from
 * {@link AbstractExecutionListener} in order to avoid interoperability problems.
 *
 */
public interface ExecutionListener {