https://www.graalvm.org/ 
public abstract class com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode extends com.oracle.truffle.js.nodes.JavaScriptNode implements com.oracle.truffle.js.nodes.access.WriteNode
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode
  super_class: com.oracle.truffle.js.nodes.JavaScriptNode
{
  protected final java.lang.Object identifier;
    descriptor: Ljava/lang/Object;
    flags: (0x0014) ACC_PROTECTED, ACC_FINAL

  protected com.oracle.truffle.js.nodes.JavaScriptNode rhs;
    descriptor: Lcom/oracle/truffle/js/nodes/JavaScriptNode;
    flags: (0x0004) ACC_PROTECTED
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.nodes.Node$Child()

  public void <init>(java.lang.Object, com.oracle.truffle.js.nodes.JavaScriptNode);
    descriptor: (Ljava/lang/Object;Lcom/oracle/truffle/js/nodes/JavaScriptNode;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode this
        start local 1 // java.lang.Object identifier
        start local 2 // com.oracle.truffle.js.nodes.JavaScriptNode rhs
         0: .line 64
            aload 0 /* this */
            invokespecial com.oracle.truffle.js.nodes.JavaScriptNode.<init>:()V
         1: .line 65
            aload 0 /* this */
            aload 1 /* identifier */
            putfield com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode.identifier:Ljava/lang/Object;
         2: .line 66
            aload 0 /* this */
            aload 2 /* rhs */
            putfield com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode.rhs:Lcom/oracle/truffle/js/nodes/JavaScriptNode;
         3: .line 67
            return
        end local 2 // com.oracle.truffle.js.nodes.JavaScriptNode rhs
        end local 1 // java.lang.Object identifier
        end local 0 // com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    4     0        this  Lcom/oracle/truffle/js/nodes/access/LazyWriteFrameSlotNode;
            0    4     1  identifier  Ljava/lang/Object;
            0    4     2         rhs  Lcom/oracle/truffle/js/nodes/JavaScriptNode;
    MethodParameters:
            Name  Flags
      identifier  
      rhs         

  public java.lang.Object getIdentifier();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode this
         0: .line 70
            aload 0 /* this */
            getfield com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode.identifier:Ljava/lang/Object;
            areturn
        end local 0 // com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/js/nodes/access/LazyWriteFrameSlotNode;

  public static com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode create(java.lang.Object, com.oracle.truffle.js.nodes.JavaScriptNode);
    descriptor: (Ljava/lang/Object;Lcom/oracle/truffle/js/nodes/JavaScriptNode;)Lcom/oracle/truffle/js/nodes/access/LazyWriteFrameSlotNode;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // java.lang.Object identifier
        start local 1 // com.oracle.truffle.js.nodes.JavaScriptNode rhs
         0: .line 74
            new com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode$LazyWriteFrameSlotUninitNode
            dup
            aload 0 /* identifier */
            aload 1 /* rhs */
            invokespecial com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode$LazyWriteFrameSlotUninitNode.<init>:(Ljava/lang/Object;Lcom/oracle/truffle/js/nodes/JavaScriptNode;)V
            areturn
        end local 1 // com.oracle.truffle.js.nodes.JavaScriptNode rhs
        end local 0 // java.lang.Object identifier
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    1     0  identifier  Ljava/lang/Object;
            0    1     1         rhs  Lcom/oracle/truffle/js/nodes/JavaScriptNode;
    MethodParameters:
            Name  Flags
      identifier  
      rhs         

  public com.oracle.truffle.js.nodes.JavaScriptNode getRhs();
    descriptor: ()Lcom/oracle/truffle/js/nodes/JavaScriptNode;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode this
         0: .line 79
            aload 0 /* this */
            getfield com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode.rhs:Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            areturn
        end local 0 // com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/js/nodes/access/LazyWriteFrameSlotNode;

  public final java.lang.Object execute(com.oracle.truffle.api.frame.VirtualFrame);
    descriptor: (Lcom/oracle/truffle/api/frame/VirtualFrame;)Ljava/lang/Object;
    flags: (0x0011) ACC_PUBLIC, ACC_FINAL
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode this
        start local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
         0: .line 84
            aload 0 /* this */
            aload 1 /* frame */
            aload 0 /* this */
            getfield com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode.rhs:Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            aload 1 /* frame */
            invokevirtual com.oracle.truffle.js.nodes.JavaScriptNode.execute:(Lcom/oracle/truffle/api/frame/VirtualFrame;)Ljava/lang/Object;
            invokevirtual com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode.executeWrite:(Lcom/oracle/truffle/api/frame/VirtualFrame;Ljava/lang/Object;)Ljava/lang/Object;
            areturn
        end local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
        end local 0 // com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0   this  Lcom/oracle/truffle/js/nodes/access/LazyWriteFrameSlotNode;
            0    1     1  frame  Lcom/oracle/truffle/api/frame/VirtualFrame;
    MethodParameters:
       Name  Flags
      frame  
}
SourceFile: "LazyWriteFrameSlotNode.java"
NestMembers:
  com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode$LazyWriteFrameSlotUninitNode
InnerClasses:
  public abstract Child = com.oracle.truffle.api.nodes.Node$Child of com.oracle.truffle.api.nodes.Node
  private final LazyWriteFrameSlotUninitNode = com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode$LazyWriteFrameSlotUninitNode of com.oracle.truffle.js.nodes.access.LazyWriteFrameSlotNode