for (IssueLocality issueLocality : issueLocalitiesToReport) {
                            Set<String> pluginIssues = issues.pluginIssues.get(issueLocality);
                            if (pluginIssues != null && !pluginIssues.isEmpty()) {
                                logger.warn("  Plugin {} issue(s):", issueLocality);
                                for (String pluginIssue : pluginIssues) {

    void reportPluginValidationIssue(
            IssueLocality locality, RepositorySystemSession session, Artifact pluginArtifact, String issue);

    /**
     * Reports plugin issues applicable to the plugin as a whole.
     * <p>
     * This method will record extra information as well, like plugin occurrence or declaration location.
     */
    void reportPluginValidationIssue(

            ExpressionEvaluator expressionEvaluator) {
        if (mojoDescriptor.getDeprecated() != null) {
            pluginValidationManager.reportPluginMojoValidationIssue(
                    PluginValidationManager.IssueLocality.INTERNAL,
                    mavenSession,
                    mojoDescriptor,
                    mojoClass,
                    logDeprecatedMojo(mojoDescriptor));
        }

                    && !DependencyScope.TEST.is(dependency.getScope())) {
                pluginValidationManager.reportPluginValidationIssue(
                        PluginValidationManager.IssueLocality.EXTERNAL,
                        session,
                        pluginArtifact,
                        "Plugin depends on the deprecated Maven 2.x compatibility layer, which will be not supported in Maven 4.x");

                .collect(Collectors.toSet());

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

                .collect(Collectors.toSet());

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

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

                .filter(this::isDeprecated)
                .map(this::formatParameter)
                .forEach(m -> pluginValidationManager.reportPluginMojoValidationIssue(
                        PluginValidationManager.IssueLocality.EXTERNAL, mavenSession, mojoDescriptor, mojoClass, m));
    }

    private boolean isDeprecated(Parameter parameter) {
        return Objects.equals(

                .collect(Collectors.toSet());

        if (!maven2Versions.isEmpty()) {
            pluginValidationManager.reportPluginValidationIssue(
                    PluginValidationManager.IssueLocality.EXTERNAL,
                    session,
                    pluginArtifact,
                    "Plugin is a Maven 2.x plugin, which will be not supported in Maven 4.x");
        }
    }

        if (isValueSet(config, expressionEvaluator)) {
            pluginValidationManager.reportPluginMojoValidationIssue(
                    PluginValidationManager.IssueLocality.INTERNAL,
                    mavenSession,
                    mojoDescriptor,
                    mojoClass,
                    formatParameter(parameter));
        }
    }