import org.apache.maven.di.Key;
import org.apache.maven.di.Scope;

public class InjectorImpl implements Injector {

    private final Map<Key<?>, Set<Binding<?>>> bindings = new HashMap<>();
    private final Map<Class<? extends Annotation>, Supplier<Scope>> scopes = new HashMap<>();

    public InjectorImpl() {
        bindScope(Singleton.class, new SingletonScope());
    }

package org.apache.maven.di;

import java.lang.annotation.Annotation;
import java.util.function.Supplier;

import org.apache.maven.di.impl.InjectorImpl;

public interface Injector {

    //
    // Builder API
    //

    static Injector create() {
        return new InjectorImpl();
    }

    Injector discover(ClassLoader classLoader);

    Injector bindScope(Class<? extends Annotation> scopeAnnotation, Scope scope);

@Named
class SisuDiBridgeModule extends AbstractModule {

    @Override
    protected void configure() {
        Provider<PlexusContainer> containerProvider = getProvider(PlexusContainer.class);

        InjectorImpl injector = new InjectorImpl() {
            @Override
            public <Q> Supplier<Q> getCompiledBinding(Key<Q> key) {
                Set<Binding<Q>> res = getBindings(key);
                if (res != null && !res.isEmpty()) {