Add @nonnull and @OVERRIDES annotations

Author: gnodet

maven-di/src/main/java/org/apache/maven/di/Injector.java

@@ -21,6 +21,7 @@
 import java.lang.annotation.Annotation;
 import java.util.function.Supplier;
 
+import org.apache.maven.api.annotations.Nonnull;
 import org.apache.maven.di.impl.InjectorImpl;
 
 public interface Injector {
@@ -29,18 +30,24 @@ public interface Injector {
     // Builder API
     //
 
+    @Nonnull
     static Injector create() {
         return new InjectorImpl();
     }
 
+    @Nonnull
     Injector discover(ClassLoader classLoader);
 
+    @Nonnull
     Injector bindScope(Class<? extends Annotation> scopeAnnotation, Scope scope);
 
+    @Nonnull
     Injector bindScope(Class<? extends Annotation> scopeAnnotation, Supplier<Scope> scope);
 
+    @Nonnull
     Injector bindImplicit(Class<?> cls);
 
+    @Nonnull
     <T> Injector bindInstance(Class<T> cls, T instance);
 
     //

maven-di/src/main/java/org/apache/maven/di/impl/InjectorImpl.java

@@ -64,10 +64,12 @@ public InjectorImpl() {
         bindScope(Singleton.class, new SingletonScope());
     }
 
+    @Override
     public <T> T getInstance(Class<T> key) {
         return getInstance(Key.of(key));
     }
 
+    @Override
     public <T> T getInstance(Key<T> key) {
         return getCompiledBinding(key).get();
     }
@@ -100,10 +102,12 @@ public Injector discover(ClassLoader classLoader) {
         return this;
     }
 
+    @Override
     public Injector bindScope(Class<? extends Annotation> scopeAnnotation, Scope scope) {
         return bindScope(scopeAnnotation, () -> scope);
     }
 
+    @Override
     public Injector bindScope(Class<? extends Annotation> scopeAnnotation, Supplier<Scope> scope) {
         if (scopes.put(scopeAnnotation, scope) != null) {
             throw new DIException(
@@ -112,6 +116,7 @@ public Injector bindScope(Class<? extends Annotation> scopeAnnotation, Supplier<
         return this;
     }
 
+    @Override
     public <U> Injector bindInstance(Class<U> clazz, U instance) {
         Key<?> key = Key.of(clazz, ReflectionUtils.qualifierOf(clazz));
         Binding<U> binding = Binding.toInstance(instance);