https://www.graalvm.org/ 
final class com.oracle.svm.graal.hotspot.libgraal.Target_jdk_vm_ci_hotspot_HotSpotJDKReflection
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: com.oracle.svm.graal.hotspot.libgraal.Target_jdk_vm_ci_hotspot_HotSpotJDKReflection
  super_class: java.lang.Object
{
  private long oopSizeOffset;
    descriptor: J
    flags: (0x0002) ACC_PRIVATE
    RuntimeVisibleAnnotations: 
      com.oracle.svm.core.annotate.Alias()
      com.oracle.svm.core.annotate.RecomputeFieldValue(kind = com.oracle.svm.core.annotate.RecomputeFieldValue$Kind.None:Lcom/oracle/svm/core/annotate/RecomputeFieldValue$Kind;)

  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.svm.graal.hotspot.libgraal.Target_jdk_vm_ci_hotspot_HotSpotJDKReflection this
         0: .line 57
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.oracle.svm.graal.hotspot.libgraal.Target_jdk_vm_ci_hotspot_HotSpotJDKReflection this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/svm/graal/hotspot/libgraal/Target_jdk_vm_ci_hotspot_HotSpotJDKReflection;
}
SourceFile: "LibGraalSubstitutions.java"
InnerClasses:
  public final Kind = com.oracle.svm.core.annotate.RecomputeFieldValue$Kind of com.oracle.svm.core.annotate.RecomputeFieldValue
    RuntimeVisibleAnnotations: 
      com.oracle.svm.core.annotate.TargetClass(className = "jdk.vm.ci.hotspot.HotSpotJDKReflection", onlyWith = {Lcom/oracle/svm/graal/hotspot/libgraal/LibGraalFeature$IsEnabled;})