context.details.addVariant("noAop${base.capitalize()}", base) {
                withCapabilities {
                    addCapability("com.google.inject", "guice-no_aop", context.details.id.version)
                }
                withFiles {
                    removeAllFiles()
                    addFile("guice-${context.details.id.version}-no_aop.jar")
                }
                withDependencies {

            context.details.addVariant("noAop${base.capitalize()}", base) {
                withCapabilities {
                    addCapability("com.google.inject", "guice-no_aop", context.details.id.version)
                }
                withFiles {
                    removeAllFiles()
                    addFile("guice-${context.details.id.version}-no_aop.jar")
                }
                withDependencies {

That second variant with a classifier is not mentioned in the pom metadata.
With the following rule, we create compile and runtime variants based on that file and make it selectable through a capability named `com.google.inject:guice-no_aop`.

.Rule to add no_aop feature variant to Guice metadata
====

                    def filePropertyFactory = new DefaultFilePropertyFactory(PropertyHost.NO_OP, fileResolver, fileCollectionFactory)
                    return new DefaultProjectLayout(fileResolver.resolve("."), fileResolver, DefaultTaskDependencyFactory.withNoAssociatedProject(), PatternSets.getNonCachingPatternSetFactory(), PropertyHost.NO_OP, fileCollectionFactory, filePropertyFactory, filePropertyFactory)
                }

    }

    public static FilePropertyFactory filePropertyFactory() {
        return new DefaultFilePropertyFactory(PropertyHost.NO_OP, resolver(), fileCollectionFactory());
    }

    public static FilePropertyFactory filePropertyFactory(File baseDir) {
        return new DefaultFilePropertyFactory(PropertyHost.NO_OP, resolver(baseDir), fileCollectionFactory(baseDir));
    }

    public static FileFactory fileFactory() {

    private static final InternalBuildProgressListener NO_OP = new NoOpListener();
    private final ProgressLoggerFactory progressLoggerFactory;
    private final InternalBuildProgressListener buildProgressListener;
    private final Clock clock;
    private final AtomicReference<InternalBuildProgressListener> currentListener = new AtomicReference<InternalBuildProgressListener>(NO_OP);
    // Protects the following state

        @Override
        public void visitInputProperty(String propertyName, PropertyValue value, boolean optional) {
            taskPropertySpecs.add(new DefaultValidatingProperty(propertyName, value, optional, ValidationActions.NO_OP));
        }

        @Override
        public void visitUnpackedOutputFileProperty(String propertyName, boolean optional, PropertyValue value, OutputFilePropertySpec spec) {

//
// where $dimensions must have size 1 and iota can have rank>=1.
// It usually used for matching rank 1 iota since the iotaOp will be folded to
// IotaOp + BroadCastInDimOp except for the case when result shape is rank 1.
bool MatchSingleIota(DenseIntElementsAttr dimensions, Value iota) {
  auto iota_op = dyn_cast_or_null<mhlo::IotaOp>(iota.getDefiningOp());
  if (!iota_op || dimensions.getNumElements() != 1) return false;

        code << [
                "id('noop')",
                "id 'noop'",
                "id('noop').version('bar')",
                "id 'noop' version 'bar'",
                "id('noop').\nversion 'bar'",
                "id('java');id('noop')",
                "id('java')\nid('noop')",
                "id('noop').version('bar');id('java')",
                "id('noop').version('bar')\nid('java')",

                def filePropertyFactory = new DefaultFilePropertyFactory(PropertyHost.NO_OP, fileResolver, fileCollectionFactory)
                return new DefaultProjectLayout(fileResolver.resolve("."), fileResolver, DefaultTaskDependencyFactory.withNoAssociatedProject(), PatternSets.getNonCachingPatternSetFactory(), PropertyHost.NO_OP, fileCollectionFactory, filePropertyFactory, filePropertyFactory)
            }
        })