https://www.graalvm.org/ 
public class com.oracle.truffle.js.nodes.control.DiscardResultNode extends com.oracle.truffle.js.nodes.unary.JSUnaryNode
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: com.oracle.truffle.js.nodes.control.DiscardResultNode
  super_class: com.oracle.truffle.js.nodes.unary.JSUnaryNode
{
  protected void <init>(com.oracle.truffle.js.nodes.JavaScriptNode);
    descriptor: (Lcom/oracle/truffle/js/nodes/JavaScriptNode;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.nodes.control.DiscardResultNode this
        start local 1 // com.oracle.truffle.js.nodes.JavaScriptNode operand
         0: .line 58
            aload 0 /* this */
            aload 1 /* operand */
            invokespecial com.oracle.truffle.js.nodes.unary.JSUnaryNode.<init>:(Lcom/oracle/truffle/js/nodes/JavaScriptNode;)V
         1: .line 59
            return
        end local 1 // com.oracle.truffle.js.nodes.JavaScriptNode operand
        end local 0 // com.oracle.truffle.js.nodes.control.DiscardResultNode this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    2     0     this  Lcom/oracle/truffle/js/nodes/control/DiscardResultNode;
            0    2     1  operand  Lcom/oracle/truffle/js/nodes/JavaScriptNode;
    MethodParameters:
         Name  Flags
      operand  

  public static com.oracle.truffle.js.nodes.JavaScriptNode create(com.oracle.truffle.js.nodes.JavaScriptNode);
    descriptor: (Lcom/oracle/truffle/js/nodes/JavaScriptNode;)Lcom/oracle/truffle/js/nodes/JavaScriptNode;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // com.oracle.truffle.js.nodes.JavaScriptNode operand
         0: .line 62
            aload 0 /* operand */
            ldc Lcom/oracle/truffle/js/runtime/objects/Undefined;
            invokevirtual com.oracle.truffle.js.nodes.JavaScriptNode.isResultAlwaysOfType:(Ljava/lang/Class;)Z
            ifeq 2
         1: .line 63
            aload 0 /* operand */
            areturn
         2: .line 65
      StackMap locals:
      StackMap stack:
            aload 0 /* operand */
            instanceof com.oracle.truffle.js.nodes.access.JSConstantNode
            ifeq 4
         3: .line 66
            invokestatic com.oracle.truffle.js.nodes.control.EmptyNode.create:()Lcom/oracle/truffle/js/nodes/control/EmptyNode;
            areturn
         4: .line 68
      StackMap locals:
      StackMap stack:
            new com.oracle.truffle.js.nodes.control.DiscardResultNode
            dup
            aload 0 /* operand */
            invokespecial com.oracle.truffle.js.nodes.control.DiscardResultNode.<init>:(Lcom/oracle/truffle/js/nodes/JavaScriptNode;)V
            areturn
        end local 0 // com.oracle.truffle.js.nodes.JavaScriptNode operand
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    5     0  operand  Lcom/oracle/truffle/js/nodes/JavaScriptNode;
    MethodParameters:
         Name  Flags
      operand  

  public boolean isResultAlwaysOfType(java.lang.Class<?>);
    descriptor: (Ljava/lang/Class;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.nodes.control.DiscardResultNode this
        start local 1 // java.lang.Class clazz
         0: .line 73
            aload 1 /* clazz */
            ldc Lcom/oracle/truffle/js/runtime/objects/Undefined;
            if_acmpne 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
        end local 1 // java.lang.Class clazz
        end local 0 // com.oracle.truffle.js.nodes.control.DiscardResultNode this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0   this  Lcom/oracle/truffle/js/nodes/control/DiscardResultNode;
            0    2     1  clazz  Ljava/lang/Class<*>;
    Signature: (Ljava/lang/Class<*>;)Z
    MethodParameters:
       Name  Flags
      clazz  

  protected com.oracle.truffle.js.nodes.JavaScriptNode copyUninitialized(java.util.Set<java.lang.Class<? extends com.oracle.truffle.api.instrumentation.Tag>>);
    descriptor: (Ljava/util/Set;)Lcom/oracle/truffle/js/nodes/JavaScriptNode;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.nodes.control.DiscardResultNode this
        start local 1 // java.util.Set materializedTags
         0: .line 78
            new com.oracle.truffle.js.nodes.control.DiscardResultNode
            dup
            aload 0 /* this */
            invokevirtual com.oracle.truffle.js.nodes.control.DiscardResultNode.getOperand:()Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            aload 1 /* materializedTags */
            invokestatic com.oracle.truffle.js.nodes.control.DiscardResultNode.cloneUninitialized:(Lcom/oracle/truffle/js/nodes/JavaScriptNode;Ljava/util/Set;)Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            invokespecial com.oracle.truffle.js.nodes.control.DiscardResultNode.<init>:(Lcom/oracle/truffle/js/nodes/JavaScriptNode;)V
            areturn
        end local 1 // java.util.Set materializedTags
        end local 0 // com.oracle.truffle.js.nodes.control.DiscardResultNode this
      LocalVariableTable:
        Start  End  Slot              Name  Signature
            0    1     0              this  Lcom/oracle/truffle/js/nodes/control/DiscardResultNode;
            0    1     1  materializedTags  Ljava/util/Set<Ljava/lang/Class<+Lcom/oracle/truffle/api/instrumentation/Tag;>;>;
    Signature: (Ljava/util/Set<Ljava/lang/Class<+Lcom/oracle/truffle/api/instrumentation/Tag;>;>;)Lcom/oracle/truffle/js/nodes/JavaScriptNode;
    MethodParameters:
                  Name  Flags
      materializedTags  

  public java.lang.Object execute(com.oracle.truffle.api.frame.VirtualFrame, java.lang.Object);
    descriptor: (Lcom/oracle/truffle/api/frame/VirtualFrame;Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=3, args_size=3
        start local 0 // com.oracle.truffle.js.nodes.control.DiscardResultNode this
        start local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
        start local 2 // java.lang.Object operandValue
         0: .line 83
            getstatic com.oracle.truffle.js.runtime.objects.Undefined.instance:Lcom/oracle/truffle/js/runtime/objects/JSDynamicObject;
            areturn
        end local 2 // java.lang.Object operandValue
        end local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
        end local 0 // com.oracle.truffle.js.nodes.control.DiscardResultNode this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    1     0          this  Lcom/oracle/truffle/js/nodes/control/DiscardResultNode;
            0    1     1         frame  Lcom/oracle/truffle/api/frame/VirtualFrame;
            0    1     2  operandValue  Ljava/lang/Object;
    MethodParameters:
              Name  Flags
      frame         
      operandValue  

  public java.lang.Object execute(com.oracle.truffle.api.frame.VirtualFrame);
    descriptor: (Lcom/oracle/truffle/api/frame/VirtualFrame;)Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.nodes.control.DiscardResultNode this
        start local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
         0: .line 88
            aload 0 /* this */
            getfield com.oracle.truffle.js.nodes.control.DiscardResultNode.operandNode: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;
            pop
         1: .line 89
            getstatic com.oracle.truffle.js.runtime.objects.Undefined.instance:Lcom/oracle/truffle/js/runtime/objects/JSDynamicObject;
            areturn
        end local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
        end local 0 // com.oracle.truffle.js.nodes.control.DiscardResultNode this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0   this  Lcom/oracle/truffle/js/nodes/control/DiscardResultNode;
            0    2     1  frame  Lcom/oracle/truffle/api/frame/VirtualFrame;
    MethodParameters:
       Name  Flags
      frame  

  public void executeVoid(com.oracle.truffle.api.frame.VirtualFrame);
    descriptor: (Lcom/oracle/truffle/api/frame/VirtualFrame;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.nodes.control.DiscardResultNode this
        start local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
         0: .line 94
            aload 0 /* this */
            getfield com.oracle.truffle.js.nodes.control.DiscardResultNode.operandNode:Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            aload 1 /* frame */
            invokevirtual com.oracle.truffle.js.nodes.JavaScriptNode.executeVoid:(Lcom/oracle/truffle/api/frame/VirtualFrame;)V
         1: .line 95
            return
        end local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
        end local 0 // com.oracle.truffle.js.nodes.control.DiscardResultNode this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0   this  Lcom/oracle/truffle/js/nodes/control/DiscardResultNode;
            0    2     1  frame  Lcom/oracle/truffle/api/frame/VirtualFrame;
    MethodParameters:
       Name  Flags
      frame  
}
SourceFile: "DiscardResultNode.java"
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.nodes.NodeInfo(cost = com.oracle.truffle.api.nodes.NodeCost.NONE:Lcom/oracle/truffle/api/nodes/NodeCost;)