https://www.graalvm.org/ 
public abstract class com.oracle.truffle.js.builtins.ObjectFunctionBuiltins$ObjectSetIntegrityLevelNode extends com.oracle.truffle.js.builtins.ObjectPrototypeBuiltins$ObjectOperation
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: com.oracle.truffle.js.builtins.ObjectFunctionBuiltins$ObjectSetIntegrityLevelNode
  super_class: com.oracle.truffle.js.builtins.ObjectPrototypeBuiltins$ObjectOperation
{
  private final boolean freeze;
    descriptor: Z
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final com.oracle.truffle.api.profiles.ConditionProfile isObject;
    descriptor: Lcom/oracle/truffle/api/profiles/ConditionProfile;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  public void <init>(com.oracle.truffle.js.runtime.JSContext, com.oracle.truffle.js.nodes.function.JSBuiltin, boolean);
    descriptor: (Lcom/oracle/truffle/js/runtime/JSContext;Lcom/oracle/truffle/js/nodes/function/JSBuiltin;Z)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=4, args_size=4
        start local 0 // com.oracle.truffle.js.builtins.ObjectFunctionBuiltins$ObjectSetIntegrityLevelNode this
        start local 1 // com.oracle.truffle.js.runtime.JSContext context
        start local 2 // com.oracle.truffle.js.nodes.function.JSBuiltin builtin
        start local 3 // boolean freeze
         0: .line 770
            aload 0 /* this */
            aload 1 /* context */
            aload 2 /* builtin */
            invokespecial com.oracle.truffle.js.builtins.ObjectPrototypeBuiltins$ObjectOperation.<init>:(Lcom/oracle/truffle/js/runtime/JSContext;Lcom/oracle/truffle/js/nodes/function/JSBuiltin;)V
         1: .line 767
            aload 0 /* this */
            invokestatic com.oracle.truffle.api.profiles.ConditionProfile.createBinaryProfile:()Lcom/oracle/truffle/api/profiles/ConditionProfile;
            putfield com.oracle.truffle.js.builtins.ObjectFunctionBuiltins$ObjectSetIntegrityLevelNode.isObject:Lcom/oracle/truffle/api/profiles/ConditionProfile;
         2: .line 771
            aload 0 /* this */
            iload 3 /* freeze */
            putfield com.oracle.truffle.js.builtins.ObjectFunctionBuiltins$ObjectSetIntegrityLevelNode.freeze:Z
         3: .line 772
            return
        end local 3 // boolean freeze
        end local 2 // com.oracle.truffle.js.nodes.function.JSBuiltin builtin
        end local 1 // com.oracle.truffle.js.runtime.JSContext context
        end local 0 // com.oracle.truffle.js.builtins.ObjectFunctionBuiltins$ObjectSetIntegrityLevelNode this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    4     0     this  Lcom/oracle/truffle/js/builtins/ObjectFunctionBuiltins$ObjectSetIntegrityLevelNode;
            0    4     1  context  Lcom/oracle/truffle/js/runtime/JSContext;
            0    4     2  builtin  Lcom/oracle/truffle/js/nodes/function/JSBuiltin;
            0    4     3   freeze  Z
    MethodParameters:
         Name  Flags
      context  
      builtin  
      freeze   

  protected java.lang.Object setIntegrityLevel(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.builtins.ObjectFunctionBuiltins$ObjectSetIntegrityLevelNode this
        start local 1 // java.lang.Object thisObj
         0: .line 776
            aload 0 /* this */
            getfield com.oracle.truffle.js.builtins.ObjectFunctionBuiltins$ObjectSetIntegrityLevelNode.isObject:Lcom/oracle/truffle/api/profiles/ConditionProfile;
            aload 1 /* thisObj */
            invokestatic com.oracle.truffle.js.runtime.JSRuntime.isObject:(Ljava/lang/Object;)Z
            invokevirtual com.oracle.truffle.api.profiles.ConditionProfile.profile:(Z)Z
            ifeq 3
         1: .line 777
            aload 1 /* thisObj */
            checkcast com.oracle.truffle.api.object.DynamicObject
            aload 0 /* this */
            getfield com.oracle.truffle.js.builtins.ObjectFunctionBuiltins$ObjectSetIntegrityLevelNode.freeze:Z
            iconst_1
            invokestatic com.oracle.truffle.js.runtime.objects.JSObject.setIntegrityLevel:(Lcom/oracle/truffle/api/object/DynamicObject;ZZ)Z
            pop
         2: .line 778
            goto 5
         3: .line 779
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            invokevirtual com.oracle.truffle.js.builtins.ObjectFunctionBuiltins$ObjectSetIntegrityLevelNode.getContext:()Lcom/oracle/truffle/js/runtime/JSContext;
            invokevirtual com.oracle.truffle.js.runtime.JSContext.getEcmaScriptVersion:()I
            bipush 6
            if_icmpge 5
         4: .line 780
            aload 0 /* this */
            aload 1 /* thisObj */
            invokevirtual com.oracle.truffle.js.builtins.ObjectFunctionBuiltins$ObjectSetIntegrityLevelNode.createTypeErrorCalledOnNonObject:(Ljava/lang/Object;)Lcom/oracle/truffle/js/runtime/JSException;
            athrow
         5: .line 783
      StackMap locals:
      StackMap stack:
            aload 1 /* thisObj */
            areturn
        end local 1 // java.lang.Object thisObj
        end local 0 // com.oracle.truffle.js.builtins.ObjectFunctionBuiltins$ObjectSetIntegrityLevelNode this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    6     0     this  Lcom/oracle/truffle/js/builtins/ObjectFunctionBuiltins$ObjectSetIntegrityLevelNode;
            0    6     1  thisObj  Ljava/lang/Object;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.dsl.Specialization()
    MethodParameters:
         Name  Flags
      thisObj  
}
SourceFile: "ObjectFunctionBuiltins.java"
NestHost: com.oracle.truffle.js.builtins.ObjectFunctionBuiltins
InnerClasses:
  public abstract ObjectSetIntegrityLevelNode = com.oracle.truffle.js.builtins.ObjectFunctionBuiltins$ObjectSetIntegrityLevelNode of com.oracle.truffle.js.builtins.ObjectFunctionBuiltins
  public abstract ObjectOperation = com.oracle.truffle.js.builtins.ObjectPrototypeBuiltins$ObjectOperation of com.oracle.truffle.js.builtins.ObjectPrototypeBuiltins