https://www.graalvm.org/ 
class com.oracle.truffle.api.test.StackTraceTest$StackTrace
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.truffle.api.test.StackTraceTest$StackTrace
  super_class: java.lang.Object
{
  final java.util.List<com.oracle.truffle.api.frame.FrameInstance> frames;
    descriptor: Ljava/util/List;
    flags: (0x0010) ACC_FINAL
    Signature: Ljava/util/List<Lcom/oracle/truffle/api/frame/FrameInstance;>;

  final com.oracle.truffle.api.frame.FrameInstance currentFrame;
    descriptor: Lcom/oracle/truffle/api/frame/FrameInstance;
    flags: (0x0010) ACC_FINAL

  final com.oracle.truffle.api.frame.FrameInstance callerFrame;
    descriptor: Lcom/oracle/truffle/api/frame/FrameInstance;
    flags: (0x0010) ACC_FINAL

  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=4, locals=1, args_size=1
        start local 0 // com.oracle.truffle.api.test.StackTraceTest$StackTrace this
         0: .line 407
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 408
            aload 0 /* this */
            new java.util.ArrayList
            dup
            invokespecial java.util.ArrayList.<init>:()V
            putfield com.oracle.truffle.api.test.StackTraceTest$StackTrace.frames:Ljava/util/List;
         2: .line 409
            invokestatic com.oracle.truffle.api.Truffle.getRuntime:()Lcom/oracle/truffle/api/TruffleRuntime;
            new com.oracle.truffle.api.test.StackTraceTest$StackTrace$1
            dup
            aload 0 /* this */
            invokespecial com.oracle.truffle.api.test.StackTraceTest$StackTrace$1.<init>:(Lcom/oracle/truffle/api/test/StackTraceTest$StackTrace;)V
            invokeinterface com.oracle.truffle.api.TruffleRuntime.iterateFrames:(Lcom/oracle/truffle/api/frame/FrameInstanceVisitor;)Ljava/lang/Object;
            pop
         3: .line 416
            aload 0 /* this */
            invokestatic com.oracle.truffle.api.Truffle.getRuntime:()Lcom/oracle/truffle/api/TruffleRuntime;
            invokeinterface com.oracle.truffle.api.TruffleRuntime.getCurrentFrame:()Lcom/oracle/truffle/api/frame/FrameInstance;
            putfield com.oracle.truffle.api.test.StackTraceTest$StackTrace.currentFrame:Lcom/oracle/truffle/api/frame/FrameInstance;
         4: .line 417
            aload 0 /* this */
            invokestatic com.oracle.truffle.api.Truffle.getRuntime:()Lcom/oracle/truffle/api/TruffleRuntime;
            invokeinterface com.oracle.truffle.api.TruffleRuntime.getCallerFrame:()Lcom/oracle/truffle/api/frame/FrameInstance;
            putfield com.oracle.truffle.api.test.StackTraceTest$StackTrace.callerFrame:Lcom/oracle/truffle/api/frame/FrameInstance;
         5: .line 418
            return
        end local 0 // com.oracle.truffle.api.test.StackTraceTest$StackTrace this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lcom/oracle/truffle/api/test/StackTraceTest$StackTrace;
}
SourceFile: "StackTraceTest.java"
NestHost: com.oracle.truffle.api.test.StackTraceTest
InnerClasses:
  private StackTrace = com.oracle.truffle.api.test.StackTraceTest$StackTrace of com.oracle.truffle.api.test.StackTraceTest
  com.oracle.truffle.api.test.StackTraceTest$StackTrace$1