checkXrefLinksInUserManualAreValid(layout, tasks, extension);
    }

    public static List<String> getDefaultExcludedPackages() {
        // TODO: This should be configured via the extension vs hardcoded in the plugin
        List<String> excludedPackages = new ArrayList<>();
        // These are part of the API, but not the DSL
        excludedPackages.add("org.gradle.tooling.**");

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          as part of the Derivative Works; within the Source form or
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          include a readable copy of the attribution notices contained
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          include a readable copy of the attribution notices contained
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          include a readable copy of the attribution notices contained
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          as part of the Derivative Works; within the Source form or
          documentation, if provided along with the Derivative Works; or,