* does not exist yet. In turn, this method will not record extra information like plugin occurrence or declaration
     * location as those are not yet available.
     */
    void reportPluginValidationIssue(
            IssueLocality locality, RepositorySystemSession session, Artifact pluginArtifact, String issue);

    /**
     * Reports plugin issues applicable to the plugin as a whole.
     * <p>

                    && "maven-compat".equals(dependency.getArtifact().getArtifactId())
                    && !DependencyScope.TEST.is(dependency.getScope())) {
                pluginValidationManager.reportPluginValidationIssue(
                        PluginValidationManager.IssueLocality.EXTERNAL,
                        session,
                        pluginArtifact,

                .map(Artifact::getVersion)
                .collect(Collectors.toSet());

        if (mavenVersions.size() > 1) {
            pluginValidationManager.reportPluginValidationIssue(
                    PluginValidationManager.IssueLocality.EXTERNAL,
                    session,
                    pluginArtifact,
                    "Plugin mixes multiple Maven versions: " + mavenVersions);

                .anyMatch(d -> "plexus-container-default".equals(d.getArtifact().getArtifactId()));

        if (pcdPresent) {
            pluginValidationManager.reportPluginValidationIssue(
                    PluginValidationManager.IssueLocality.EXTERNAL,
                    session,
                    pluginArtifact,
                    "Plugin depends on plexus-container-default, which is EOL");

                .map(a -> a.getGroupId() + ":" + a.getArtifactId() + ":" + a.getVersion())
                .collect(Collectors.toSet());

        if (!mavenArtifacts.isEmpty()) {
            pluginValidationManager.reportPluginValidationIssue(
                    PluginValidationManager.IssueLocality.EXTERNAL,
                    session,
                    pluginArtifact,

            if (INLINE_VALIDATION_LEVEL.contains(validationReportLevel)) {
                logger.warn(" {}", issue);
            }
        }
    }

    @Override
    public void reportPluginValidationIssue(
            IssueLocality locality, RepositorySystemSession session, Artifact pluginArtifact, String issue) {
        String pluginKey = pluginKey(pluginArtifact);

                .map(Artifact::getVersion)
                .filter(v -> v.startsWith("2."))
                .collect(Collectors.toSet());

        if (!maven2Versions.isEmpty()) {
            pluginValidationManager.reportPluginValidationIssue(
                    PluginValidationManager.IssueLocality.EXTERNAL,
                    session,
                    pluginArtifact,