resolvers.add(resolver);
    }

    private abstract static class PluginResult {
        static final PluginResult NOT_FOUND_IN_ANY_BUILD = new PluginResult() {};
        static final PluginResult NO_INCLUDED_BUILDS = new PluginResult() {};
    }

    private static class ResolvedPlugin extends PluginResult {
        final PluginResolution resolution;

Class <org.gradle.composite.internal.plugins.CompositeBuildPluginResolverContributor$PluginResult$1> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (CompositeBuildPluginResolverContributor.java:0)