https://www.graalvm.org/ 
abstract class com.oracle.truffle.api.library.test.examples.DynamicDispatchExample$SampleExport1
  minor version: 0
  major version: 59
  flags: flags: (0x0420) ACC_SUPER, ACC_ABSTRACT
  this_class: com.oracle.truffle.api.library.test.examples.DynamicDispatchExample$SampleExport1
  super_class: java.lang.Object
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.api.library.test.examples.DynamicDispatchExample$SampleExport1 this
         0: .line 95
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.oracle.truffle.api.library.test.examples.DynamicDispatchExample$SampleExport1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/api/library/test/examples/DynamicDispatchExample$SampleExport1;

  static java.lang.String message(com.oracle.truffle.api.library.test.examples.DynamicDispatchExample$DynamicDispatchObject);
    descriptor: (Lcom/oracle/truffle/api/library/test/examples/DynamicDispatchExample$DynamicDispatchObject;)Ljava/lang/String;
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.api.library.test.examples.DynamicDispatchExample$DynamicDispatchObject receiver
         0: .line 98
            ldc "export1"
            areturn
        end local 0 // com.oracle.truffle.api.library.test.examples.DynamicDispatchExample$DynamicDispatchObject receiver
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    1     0  receiver  Lcom/oracle/truffle/api/library/test/examples/DynamicDispatchExample$DynamicDispatchObject;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportMessage()
    MethodParameters:
          Name  Flags
      receiver  
}
SourceFile: "DynamicDispatchExample.java"
NestHost: com.oracle.truffle.api.library.test.examples.DynamicDispatchExample
InnerClasses:
  final DynamicDispatchObject = com.oracle.truffle.api.library.test.examples.DynamicDispatchExample$DynamicDispatchObject of com.oracle.truffle.api.library.test.examples.DynamicDispatchExample
  abstract SampleExport1 = com.oracle.truffle.api.library.test.examples.DynamicDispatchExample$SampleExport1 of com.oracle.truffle.api.library.test.examples.DynamicDispatchExample
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportLibrary(value = Lcom/oracle/truffle/api/library/test/examples/DynamicDispatchExample$SampleLibrary;, receiverType = Lcom/oracle/truffle/api/library/test/examples/DynamicDispatchExample$DynamicDispatchObject;)