https://www.graalvm.org/ 
class com.oracle.svm.hosted.annotation.AnnotationObjectReplacer implements java.util.function.Function<java.lang.Object, java.lang.Object>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.svm.hosted.annotation.AnnotationObjectReplacer
  super_class: java.lang.Object
{
  private java.util.concurrent.ConcurrentHashMap<java.lang.Object, java.lang.Object> objectCache;
    descriptor: Ljava/util/concurrent/ConcurrentHashMap;
    flags: (0x0002) ACC_PRIVATE
    Signature: Ljava/util/concurrent/ConcurrentHashMap<Ljava/lang/Object;Ljava/lang/Object;>;

  private static final com.oracle.svm.core.SubstrateAnnotationInvocationHandler SINGLETON_HANDLER;
    descriptor: Lcom/oracle/svm/core/SubstrateAnnotationInvocationHandler;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  private static final java.lang.Class<?> HOSTED_INVOCATION_HANDLER_CLASS;
    descriptor: Ljava/lang/Class;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    Signature: Ljava/lang/Class<*>;

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=3, locals=1, args_size=0
         0: .line 648
            new com.oracle.svm.core.SubstrateAnnotationInvocationHandler
            dup
            aconst_null
            invokespecial com.oracle.svm.core.SubstrateAnnotationInvocationHandler.<init>:(Ljava/lang/reflect/InvocationHandler;)V
            putstatic com.oracle.svm.hosted.annotation.AnnotationObjectReplacer.SINGLETON_HANDLER:Lcom/oracle/svm/core/SubstrateAnnotationInvocationHandler;
         1: .line 653
            ldc "sun.reflect.annotation.AnnotationInvocationHandler"
            invokestatic java.lang.Class.forName:(Ljava/lang/String;)Ljava/lang/Class;
            putstatic com.oracle.svm.hosted.annotation.AnnotationObjectReplacer.HOSTED_INVOCATION_HANDLER_CLASS:Ljava/lang/Class;
         2: .line 654
            goto 5
      StackMap locals:
      StackMap stack: java.lang.ClassNotFoundException
         3: astore 0 /* ex */
        start local 0 // java.lang.ClassNotFoundException ex
         4: .line 655
            aload 0 /* ex */
            invokestatic com.oracle.svm.core.util.VMError.shouldNotReachHere:(Ljava/lang/Throwable;)Ljava/lang/RuntimeException;
            athrow
        end local 0 // java.lang.ClassNotFoundException ex
         5: .line 657
      StackMap locals:
      StackMap stack:
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            4    5     0    ex  Ljava/lang/ClassNotFoundException;
      Exception table:
        from    to  target  type
           1     2       3  Class java.lang.ClassNotFoundException

  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // com.oracle.svm.hosted.annotation.AnnotationObjectReplacer this
         0: .line 626
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 641
            aload 0 /* this */
            new java.util.concurrent.ConcurrentHashMap
            dup
            invokespecial java.util.concurrent.ConcurrentHashMap.<init>:()V
            putfield com.oracle.svm.hosted.annotation.AnnotationObjectReplacer.objectCache:Ljava/util/concurrent/ConcurrentHashMap;
         2: .line 626
            return
        end local 0 // com.oracle.svm.hosted.annotation.AnnotationObjectReplacer this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lcom/oracle/svm/hosted/annotation/AnnotationObjectReplacer;

  public java.lang.Object apply(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=2
        start local 0 // com.oracle.svm.hosted.annotation.AnnotationObjectReplacer this
        start local 1 // java.lang.Object original
         0: .line 661
            aload 1 /* original */
            invokevirtual java.lang.Object.getClass:()Ljava/lang/Class;
            astore 2 /* clazz */
        start local 2 // java.lang.Class clazz
         1: .line 662
            ldc Ljava/lang/annotation/Annotation;
            aload 2 /* clazz */
            invokevirtual java.lang.Class.isAssignableFrom:(Ljava/lang/Class;)Z
            ifeq 3
            ldc Ljava/lang/reflect/Proxy;
            aload 2 /* clazz */
            invokevirtual java.lang.Class.isAssignableFrom:(Ljava/lang/Class;)Z
            ifeq 3
         2: .line 663
            aload 0 /* this */
            getfield com.oracle.svm.hosted.annotation.AnnotationObjectReplacer.objectCache:Ljava/util/concurrent/ConcurrentHashMap;
            aload 1 /* original */
            invokedynamic apply()Ljava/util/function/Function;
              Bootstrap: invokestatic java.lang.invoke.LambdaMetafactory.metafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
                Method arguments:
                  (Ljava/lang/Object;)Ljava/lang/Object;
                  com/oracle/svm/hosted/annotation/AnnotationObjectReplacer.replacementComputer(Ljava/lang/Object;)Ljava/lang/Object; (6)
                  (Ljava/lang/Object;)Ljava/lang/Object;
            invokevirtual java.util.concurrent.ConcurrentHashMap.computeIfAbsent:(Ljava/lang/Object;Ljava/util/function/Function;)Ljava/lang/Object;
            areturn
         3: .line 664
      StackMap locals: java.lang.Class
      StackMap stack:
            aload 1 /* original */
            instanceof com.oracle.svm.core.SubstrateAnnotationInvocationHandler
            ifeq 5
         4: .line 665
            getstatic com.oracle.svm.hosted.annotation.AnnotationObjectReplacer.SINGLETON_HANDLER:Lcom/oracle/svm/core/SubstrateAnnotationInvocationHandler;
            areturn
         5: .line 666
      StackMap locals:
      StackMap stack:
            getstatic com.oracle.svm.hosted.annotation.AnnotationObjectReplacer.HOSTED_INVOCATION_HANDLER_CLASS:Ljava/lang/Class;
            aload 1 /* original */
            invokevirtual java.lang.Class.isInstance:(Ljava/lang/Object;)Z
            ifeq 7
         6: .line 671
            ldc "Instance of the hosted AnnotationInvocationHandler is reachable at run time"
            invokestatic com.oracle.svm.core.util.VMError.shouldNotReachHere:(Ljava/lang/String;)Ljava/lang/RuntimeException;
            athrow
         7: .line 674
      StackMap locals:
      StackMap stack:
            aload 1 /* original */
            areturn
        end local 2 // java.lang.Class clazz
        end local 1 // java.lang.Object original
        end local 0 // com.oracle.svm.hosted.annotation.AnnotationObjectReplacer this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    8     0      this  Lcom/oracle/svm/hosted/annotation/AnnotationObjectReplacer;
            0    8     1  original  Ljava/lang/Object;
            1    8     2     clazz  Ljava/lang/Class<*>;
    MethodParameters:
          Name  Flags
      original  

  private static java.lang.Object replacementComputer(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=5, locals=3, args_size=1
        start local 0 // java.lang.Object original
         0: .line 682
            aload 0 /* original */
            invokevirtual java.lang.Object.getClass:()Ljava/lang/Class;
            invokevirtual java.lang.Class.getInterfaces:()[Ljava/lang/Class;
            astore 1 /* interfaces */
        start local 1 // java.lang.Class[] interfaces
         1: .line 683
            aload 1 /* interfaces */
            aload 1 /* interfaces */
            arraylength
            iconst_1
            iadd
            invokestatic java.util.Arrays.copyOf:([Ljava/lang/Object;I)[Ljava/lang/Object;
            checkcast java.lang.Class[]
            astore 2 /* extendedInterfaces */
        start local 2 // java.lang.Class[] extendedInterfaces
         2: .line 684
            aload 2 /* extendedInterfaces */
            aload 2 /* extendedInterfaces */
            arraylength
            iconst_1
            isub
            getstatic com.oracle.svm.hosted.annotation.AnnotationSupport.constantAnnotationMarkerInterface:Ljava/lang/Class;
            aastore
         3: .line 685
            aload 0 /* original */
            invokevirtual java.lang.Object.getClass:()Ljava/lang/Class;
            invokevirtual java.lang.Class.getClassLoader:()Ljava/lang/ClassLoader;
            aload 2 /* extendedInterfaces */
            new com.oracle.svm.core.SubstrateAnnotationInvocationHandler
            dup
            aload 0 /* original */
            invokestatic java.lang.reflect.Proxy.getInvocationHandler:(Ljava/lang/Object;)Ljava/lang/reflect/InvocationHandler;
            invokespecial com.oracle.svm.core.SubstrateAnnotationInvocationHandler.<init>:(Ljava/lang/reflect/InvocationHandler;)V
            invokestatic java.lang.reflect.Proxy.newProxyInstance:(Ljava/lang/ClassLoader;[Ljava/lang/Class;Ljava/lang/reflect/InvocationHandler;)Ljava/lang/Object;
            areturn
        end local 2 // java.lang.Class[] extendedInterfaces
        end local 1 // java.lang.Class[] interfaces
        end local 0 // java.lang.Object original
      LocalVariableTable:
        Start  End  Slot                Name  Signature
            0    4     0            original  Ljava/lang/Object;
            1    4     1          interfaces  [Ljava/lang/Class;
            2    4     2  extendedInterfaces  [Ljava/lang/Class;
    MethodParameters:
          Name  Flags
      original  
}
Signature: Ljava/lang/Object;Ljava/util/function/Function<Ljava/lang/Object;Ljava/lang/Object;>;
SourceFile: "AnnotationSupport.java"
InnerClasses:
  public final Lookup = java.lang.invoke.MethodHandles$Lookup of java.lang.invoke.MethodHandles