@Test
    void testMirrorWithMirrorOfPatternContainingANegationIsNotSelected() {
        ArtifactRepository repository = new DefaultArtifactRepository("snapshots.repo", "http://whatever", null);
        String pattern = "external:*, !snapshots.repo";
        assertFalse(DefaultMirrorSelector.matchPattern(repository, pattern));
    }

                }
            }
        }
        return result;
    }

    /**
     * Checks the URL to see if this repository refers to an external repository
     *
     * @param originalRepository
     * @return true if external.
     */
    static boolean isExternalRepo(ArtifactRepository originalRepository) {
        try {
            URL url = new URL(originalRepository.getUrl());

        // do nothing
    }

    /**
     * Invoked after all projects were built.
     *
     * This callback is intended to allow extensions to perform cleanup of any
     * allocated external resources after the build. It is invoked on best-effort
     * basis and may be missed due to an Error or RuntimeException in Maven core
     * code.
     *
     * @param session the Maven session

     */
    List<Profile> getActivePomProfiles(String modelId);

    /**
     * Gets the external profiles that were active during model building. External profiles are those that were
     * contributed by {@link ModelBuildingRequest#getProfiles()}.
     *
     * @return The active external profiles or an empty list if none, never {@code null}.
     */
    List<Profile> getActiveExternalProfiles();

    /**

     */
    @Nonnull
    List<Profile> getActivePomProfiles(@Nonnull String modelId);

    /**
     * Gets the external profiles that were active during model building. External profiles are those that were
     * contributed by {@link ModelBuilderRequest#getProfiles()}.
     *
     * @return The active external profiles or an empty list if none, never {@code null}.
     */
    @Nonnull
    List<Profile> getActiveExternalProfiles();

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

                .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");
        }
    }

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

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

         * it will be reported as "external". It is up to developer to correctly interpret output (GAV) of issues
         * and realize that in this case he wears two hats:" "user" and "(plugin) developer".
         */
        EXTERNAL
    }

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