https://www.graalvm.org/ 
public abstract class com.oracle.truffle.js.nodes.function.IterationScopeNode extends com.oracle.truffle.js.nodes.JavaScriptNode
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: com.oracle.truffle.js.nodes.function.IterationScopeNode
  super_class: com.oracle.truffle.js.nodes.JavaScriptNode
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.js.nodes.function.IterationScopeNode this
         0: .line 56
            aload 0 /* this */
            invokespecial com.oracle.truffle.js.nodes.JavaScriptNode.<init>:()V
            return
        end local 0 // com.oracle.truffle.js.nodes.function.IterationScopeNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/js/nodes/function/IterationScopeNode;

  public static com.oracle.truffle.js.nodes.function.IterationScopeNode create(com.oracle.truffle.api.frame.FrameDescriptor, com.oracle.truffle.js.nodes.access.JSReadFrameSlotNode[], com.oracle.truffle.js.nodes.access.JSWriteFrameSlotNode[]);
    descriptor: (Lcom/oracle/truffle/api/frame/FrameDescriptor;[Lcom/oracle/truffle/js/nodes/access/JSReadFrameSlotNode;[Lcom/oracle/truffle/js/nodes/access/JSWriteFrameSlotNode;)Lcom/oracle/truffle/js/nodes/function/IterationScopeNode;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=3, args_size=3
        start local 0 // com.oracle.truffle.api.frame.FrameDescriptor frameDescriptor
        start local 1 // com.oracle.truffle.js.nodes.access.JSReadFrameSlotNode[] reads
        start local 2 // com.oracle.truffle.js.nodes.access.JSWriteFrameSlotNode[] writes
         0: .line 59
            new com.oracle.truffle.js.nodes.function.IterationScopeNode$FrameIterationScopeNode
            dup
            aload 0 /* frameDescriptor */
            aload 1 /* reads */
            aload 2 /* writes */
            invokespecial com.oracle.truffle.js.nodes.function.IterationScopeNode$FrameIterationScopeNode.<init>:(Lcom/oracle/truffle/api/frame/FrameDescriptor;[Lcom/oracle/truffle/js/nodes/access/JSReadFrameSlotNode;[Lcom/oracle/truffle/js/nodes/access/JSWriteFrameSlotNode;)V
            areturn
        end local 2 // com.oracle.truffle.js.nodes.access.JSWriteFrameSlotNode[] writes
        end local 1 // com.oracle.truffle.js.nodes.access.JSReadFrameSlotNode[] reads
        end local 0 // com.oracle.truffle.api.frame.FrameDescriptor frameDescriptor
      LocalVariableTable:
        Start  End  Slot             Name  Signature
            0    1     0  frameDescriptor  Lcom/oracle/truffle/api/frame/FrameDescriptor;
            0    1     1            reads  [Lcom/oracle/truffle/js/nodes/access/JSReadFrameSlotNode;
            0    1     2           writes  [Lcom/oracle/truffle/js/nodes/access/JSWriteFrameSlotNode;
    MethodParameters:
                 Name  Flags
      frameDescriptor  
      reads            
      writes           

  public abstract com.oracle.truffle.api.frame.VirtualFrame execute(com.oracle.truffle.api.frame.VirtualFrame);
    descriptor: (Lcom/oracle/truffle/api/frame/VirtualFrame;)Lcom/oracle/truffle/api/frame/VirtualFrame;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
       Name  Flags
      frame  

  public abstract void executeCopy(com.oracle.truffle.api.frame.VirtualFrame, com.oracle.truffle.api.frame.VirtualFrame);
    descriptor: (Lcom/oracle/truffle/api/frame/VirtualFrame;Lcom/oracle/truffle/api/frame/VirtualFrame;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
           Name  Flags
      toFrame    
      fromFrame  

  public java.lang.Object execute(com.oracle.truffle.api.frame.VirtualFrame);
    descriptor: (Lcom/oracle/truffle/api/frame/VirtualFrame;)Ljava/lang/Object;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            aload 1
            invokevirtual com.oracle.truffle.js.nodes.function.IterationScopeNode.execute:(Lcom/oracle/truffle/api/frame/VirtualFrame;)Lcom/oracle/truffle/api/frame/VirtualFrame;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "IterationScopeNode.java"
NestMembers:
  com.oracle.truffle.js.nodes.function.IterationScopeNode$FrameIterationScopeNode
InnerClasses:
  public final FrameIterationScopeNode = com.oracle.truffle.js.nodes.function.IterationScopeNode$FrameIterationScopeNode of com.oracle.truffle.js.nodes.function.IterationScopeNode