https://openjdk.java.net/ 
class com.sun.tools.jdi.EventSetImpl$ModificationWatchpointEventImpl extends com.sun.tools.jdi.EventSetImpl$WatchpointEventImpl implements com.sun.jdi.event.ModificationWatchpointEvent
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.sun.tools.jdi.EventSetImpl$ModificationWatchpointEventImpl
  super_class: com.sun.tools.jdi.EventSetImpl$WatchpointEventImpl
{
  com.sun.jdi.Value newValue;
    descriptor: Lcom/sun/jdi/Value;
    flags: (0x0000) 

  final com.sun.tools.jdi.EventSetImpl this$0;
    descriptor: Lcom/sun/tools/jdi/EventSetImpl;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  void <init>(com.sun.tools.jdi.EventSetImpl, com.sun.tools.jdi.JDWP$Event$Composite$Events$FieldModification);
    descriptor: (Lcom/sun/tools/jdi/EventSetImpl;Lcom/sun/tools/jdi/JDWP$Event$Composite$Events$FieldModification;)V
    flags: (0x0000) 
    Code:
      stack=12, locals=3, args_size=3
        start local 0 // com.sun.tools.jdi.EventSetImpl$ModificationWatchpointEventImpl this
        start local 2 // com.sun.tools.jdi.JDWP$Event$Composite$Events$FieldModification evt
         0: .line 540
            aload 0 /* this */
            aload 1
            putfield com.sun.tools.jdi.EventSetImpl$ModificationWatchpointEventImpl.this$0:Lcom/sun/tools/jdi/EventSetImpl;
         1: .line 541
            aload 0 /* this */
            aload 1
            aload 2 /* evt */
            aload 2 /* evt */
            getfield com.sun.tools.jdi.JDWP$Event$Composite$Events$FieldModification.requestID:I
            aload 2 /* evt */
            getfield com.sun.tools.jdi.JDWP$Event$Composite$Events$FieldModification.thread:Lcom/sun/tools/jdi/ThreadReferenceImpl;
            aload 2 /* evt */
            getfield com.sun.tools.jdi.JDWP$Event$Composite$Events$FieldModification.location:Lcom/sun/jdi/Location;
         2: .line 542
            aload 2 /* evt */
            getfield com.sun.tools.jdi.JDWP$Event$Composite$Events$FieldModification.refTypeTag:B
            aload 2 /* evt */
            getfield com.sun.tools.jdi.JDWP$Event$Composite$Events$FieldModification.typeID:J
            aload 2 /* evt */
            getfield com.sun.tools.jdi.JDWP$Event$Composite$Events$FieldModification.fieldID:J
            aload 2 /* evt */
            getfield com.sun.tools.jdi.JDWP$Event$Composite$Events$FieldModification.object:Lcom/sun/tools/jdi/ObjectReferenceImpl;
            invokespecial com.sun.tools.jdi.EventSetImpl$WatchpointEventImpl.<init>:(Lcom/sun/tools/jdi/EventSetImpl;Lcom/sun/tools/jdi/JDWP$Event$Composite$Events$EventsCommon;ILcom/sun/jdi/ThreadReference;Lcom/sun/jdi/Location;BJJLcom/sun/jdi/ObjectReference;)V
         3: .line 543
            aload 0 /* this */
            aload 2 /* evt */
            getfield com.sun.tools.jdi.JDWP$Event$Composite$Events$FieldModification.valueToBe:Lcom/sun/tools/jdi/ValueImpl;
            putfield com.sun.tools.jdi.EventSetImpl$ModificationWatchpointEventImpl.newValue:Lcom/sun/jdi/Value;
         4: .line 544
            return
        end local 2 // com.sun.tools.jdi.JDWP$Event$Composite$Events$FieldModification evt
        end local 0 // com.sun.tools.jdi.EventSetImpl$ModificationWatchpointEventImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    5     0  this  Lcom/sun/tools/jdi/EventSetImpl$ModificationWatchpointEventImpl;
            0    5     2   evt  Lcom/sun/tools/jdi/JDWP$Event$Composite$Events$FieldModification;
    MethodParameters:
        Name  Flags
      this$0  final
      evt     

  public com.sun.jdi.Value valueToBe();
    descriptor: ()Lcom/sun/jdi/Value;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.sun.tools.jdi.EventSetImpl$ModificationWatchpointEventImpl this
         0: .line 547
            aload 0 /* this */
            getfield com.sun.tools.jdi.EventSetImpl$ModificationWatchpointEventImpl.newValue:Lcom/sun/jdi/Value;
            areturn
        end local 0 // com.sun.tools.jdi.EventSetImpl$ModificationWatchpointEventImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/sun/tools/jdi/EventSetImpl$ModificationWatchpointEventImpl;

  java.lang.String eventName();
    descriptor: ()Ljava/lang/String;
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.sun.tools.jdi.EventSetImpl$ModificationWatchpointEventImpl this
         0: .line 551
            ldc "ModificationWatchpoint"
            areturn
        end local 0 // com.sun.tools.jdi.EventSetImpl$ModificationWatchpointEventImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/sun/tools/jdi/EventSetImpl$ModificationWatchpointEventImpl;
}
SourceFile: "EventSetImpl.java"
NestHost: com.sun.tools.jdi.EventSetImpl
InnerClasses:
  ModificationWatchpointEventImpl = com.sun.tools.jdi.EventSetImpl$ModificationWatchpointEventImpl of com.sun.tools.jdi.EventSetImpl
  abstract WatchpointEventImpl = com.sun.tools.jdi.EventSetImpl$WatchpointEventImpl of com.sun.tools.jdi.EventSetImpl
  Event = com.sun.tools.jdi.JDWP$Event of com.sun.tools.jdi.JDWP
  Composite = com.sun.tools.jdi.JDWP$Event$Composite of com.sun.tools.jdi.JDWP$Event
  Events = com.sun.tools.jdi.JDWP$Event$Composite$Events of com.sun.tools.jdi.JDWP$Event$Composite
  abstract EventsCommon = com.sun.tools.jdi.JDWP$Event$Composite$Events$EventsCommon of com.sun.tools.jdi.JDWP$Event$Composite$Events
  FieldModification = com.sun.tools.jdi.JDWP$Event$Composite$Events$FieldModification of com.sun.tools.jdi.JDWP$Event$Composite$Events