inject proxies for indy

instrumentation/internal/internal-lambda/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/internal/lambda/LambdaInstrumentationModule.java

@@ -10,13 +10,17 @@
 import com.google.auto.service.AutoService;
 import io.opentelemetry.javaagent.extension.instrumentation.InstrumentationModule;
 import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
+import io.opentelemetry.javaagent.extension.instrumentation.internal.ExperimentalInstrumentationModule;
+import io.opentelemetry.javaagent.extension.instrumentation.internal.injection.ClassInjector;
+import io.opentelemetry.javaagent.extension.instrumentation.internal.injection.InjectionMode;
 import io.opentelemetry.sdk.autoconfigure.spi.ConfigProperties;
 import java.util.ArrayList;
 import java.util.List;
 import net.bytebuddy.utility.JavaModule;
 
 @AutoService(InstrumentationModule.class)
-public class LambdaInstrumentationModule extends InstrumentationModule {
+public class LambdaInstrumentationModule extends InstrumentationModule
+    implements ExperimentalInstrumentationModule {
   public LambdaInstrumentationModule() {
     super("internal-lambda");
   }
@@ -27,6 +31,20 @@ public boolean defaultEnabled(ConfigProperties config) {
     return true;
   }
 
+  @Override
+  public void injectClasses(ClassInjector injector) {
+    injector
+        .proxyBuilder(
+            "io.opentelemetry.javaagent.instrumentation.internal.lambda.LambdaTransformer")
+        .inject(InjectionMode.CLASS_ONLY);
+    if (JavaModule.isSupported()) {
+      injector
+          .proxyBuilder(
+              "io.opentelemetry.javaagent.instrumentation.internal.lambda.Java9LambdaTransformer")
+          .inject(InjectionMode.CLASS_ONLY);
+    }
+  }
+
   @Override
   public List<String> getAdditionalHelperClassNames() {
     // this instrumentation uses ASM not ByteBuddy so muzzle doesn't automatically add helper