https://www.graalvm.org/ 
public final class com.oracle.truffle.js.runtime.objects.Null
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: com.oracle.truffle.js.runtime.objects.Null
  super_class: java.lang.Object
{
  public static final java.lang.String TYPE_NAME;
    descriptor: Ljava/lang/String;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: "object"

  public static final java.lang.String NAME;
    descriptor: Ljava/lang/String;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: "null"

  public static final java.lang.String CLASS_NAME;
    descriptor: Ljava/lang/String;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: "null|undefined"

  public static final com.oracle.truffle.js.runtime.builtins.JSClass NULL_CLASS;
    descriptor: Lcom/oracle/truffle/js/runtime/builtins/JSClass;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  static final com.oracle.truffle.api.object.Shape SHAPE;
    descriptor: Lcom/oracle/truffle/api/object/Shape;
    flags: (0x0018) ACC_STATIC, ACC_FINAL

  public static final com.oracle.truffle.js.runtime.objects.JSDynamicObject instance;
    descriptor: Lcom/oracle/truffle/js/runtime/objects/JSDynamicObject;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=0, args_size=0
         0: .line 57
            getstatic com.oracle.truffle.js.runtime.objects.Null$NullClass.INSTANCE:Lcom/oracle/truffle/js/runtime/objects/Null$NullClass;
            putstatic com.oracle.truffle.js.runtime.objects.Null.NULL_CLASS:Lcom/oracle/truffle/js/runtime/builtins/JSClass;
         1: .line 58
            getstatic com.oracle.truffle.js.runtime.objects.Null.NULL_CLASS:Lcom/oracle/truffle/js/runtime/builtins/JSClass;
            invokestatic com.oracle.truffle.js.runtime.objects.JSShape.makeStaticRoot:(Lcom/oracle/truffle/js/runtime/builtins/JSClass;)Lcom/oracle/truffle/api/object/Shape;
            putstatic com.oracle.truffle.js.runtime.objects.Null.SHAPE:Lcom/oracle/truffle/api/object/Shape;
         2: .line 59
            new com.oracle.truffle.js.runtime.objects.Nullish
            dup
            invokespecial com.oracle.truffle.js.runtime.objects.Nullish.<init>:()V
            putstatic com.oracle.truffle.js.runtime.objects.Null.instance:Lcom/oracle/truffle/js/runtime/objects/JSDynamicObject;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.js.runtime.objects.Null this
         0: .line 61
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 62
            return
        end local 0 // com.oracle.truffle.js.runtime.objects.Null this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lcom/oracle/truffle/js/runtime/objects/Null;
}
SourceFile: "Null.java"
NestMembers:
  com.oracle.truffle.js.runtime.objects.Null$NullClass
InnerClasses:
  final NullClass = com.oracle.truffle.js.runtime.objects.Null$NullClass of com.oracle.truffle.js.runtime.objects.Null