https://www.graalvm.org/ 
public abstract class com.oracle.truffle.js.nodes.unary.JSNotNode extends com.oracle.truffle.js.nodes.unary.JSUnaryNode
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: com.oracle.truffle.js.nodes.unary.JSNotNode
  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.unary.JSNotNode this
        start local 1 // com.oracle.truffle.js.nodes.JavaScriptNode operand
         0: .line 63
            aload 0 /* this */
            aload 1 /* operand */
            invokespecial com.oracle.truffle.js.nodes.unary.JSUnaryNode.<init>:(Lcom/oracle/truffle/js/nodes/JavaScriptNode;)V
         1: .line 64
            return
        end local 1 // com.oracle.truffle.js.nodes.JavaScriptNode operand
        end local 0 // com.oracle.truffle.js.nodes.unary.JSNotNode this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    2     0     this  Lcom/oracle/truffle/js/nodes/unary/JSNotNode;
            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
         0: .line 82
            new java.lang.Error
            dup
            ldc "Unresolved compilation problem: \n\tJSNotNodeGen cannot be resolved\n"
            invokespecial java.lang.Error.<init>:(Ljava/lang/String;)V
            athrow
      LocalVariableTable:
        Start  End  Slot  Name  Signature
    MethodParameters:
         Name  Flags
      operand  

  public boolean hasTag(java.lang.Class<? extends com.oracle.truffle.api.instrumentation.Tag>);
    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.unary.JSNotNode this
        start local 1 // java.lang.Class tag
         0: .line 87
            aload 1 /* tag */
            ldc Lcom/oracle/truffle/js/nodes/instrumentation/JSTags$UnaryOperationTag;
            if_acmpne 2
         1: .line 88
            iconst_1
            ireturn
         2: .line 90
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 1 /* tag */
            invokespecial com.oracle.truffle.js.nodes.unary.JSUnaryNode.hasTag:(Ljava/lang/Class;)Z
            ireturn
        end local 1 // java.lang.Class tag
        end local 0 // com.oracle.truffle.js.nodes.unary.JSNotNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lcom/oracle/truffle/js/nodes/unary/JSNotNode;
            0    3     1   tag  Ljava/lang/Class<+Lcom/oracle/truffle/api/instrumentation/Tag;>;
    Signature: (Ljava/lang/Class<+Lcom/oracle/truffle/api/instrumentation/Tag;>;)Z
    MethodParameters:
      Name  Flags
      tag   

  public com.oracle.truffle.api.instrumentation.InstrumentableNode materializeInstrumentableNodes(java.util.Set<java.lang.Class<? extends com.oracle.truffle.api.instrumentation.Tag>>);
    descriptor: (Ljava/util/Set;)Lcom/oracle/truffle/api/instrumentation/InstrumentableNode;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.nodes.unary.JSNotNode this
        start local 1 // java.util.Set materializedTags
         0: .line 96
            aload 0 /* this */
            invokevirtual com.oracle.truffle.js.nodes.unary.JSNotNode.getOperand:()Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            invokevirtual com.oracle.truffle.js.nodes.JavaScriptNode.hasSourceSection:()Z
            ifne 2
         1: .line 97
            aload 0 /* this */
            aload 0 /* this */
            invokevirtual com.oracle.truffle.js.nodes.unary.JSNotNode.getOperand:()Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            invokestatic com.oracle.truffle.js.nodes.unary.JSNotNode.transferSourceSectionAndTags:(Lcom/oracle/truffle/js/nodes/JavaScriptNode;Lcom/oracle/truffle/js/nodes/JavaScriptNode;)V
         2: .line 99
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            areturn
        end local 1 // java.util.Set materializedTags
        end local 0 // com.oracle.truffle.js.nodes.unary.JSNotNode this
      LocalVariableTable:
        Start  End  Slot              Name  Signature
            0    3     0              this  Lcom/oracle/truffle/js/nodes/unary/JSNotNode;
            0    3     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/api/instrumentation/InstrumentableNode;
    MethodParameters:
                  Name  Flags
      materializedTags  

  public java.lang.Object getNodeObject();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // com.oracle.truffle.js.nodes.unary.JSNotNode this
         0: .line 104
            ldc "operator"
            aload 0 /* this */
            invokevirtual java.lang.Object.getClass:()Ljava/lang/Class;
            ldc Lcom/oracle/truffle/api/nodes/NodeInfo;
            invokevirtual java.lang.Class.getAnnotation:(Ljava/lang/Class;)Ljava/lang/annotation/Annotation;
            checkcast com.oracle.truffle.api.nodes.NodeInfo
            invokeinterface com.oracle.truffle.api.nodes.NodeInfo.shortName:()Ljava/lang/String;
            invokestatic com.oracle.truffle.js.nodes.instrumentation.JSTags.createNodeObjectDescriptor:(Ljava/lang/String;Ljava/lang/Object;)Lcom/oracle/truffle/js/nodes/instrumentation/NodeObjectDescriptor;
            areturn
        end local 0 // com.oracle.truffle.js.nodes.unary.JSNotNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/js/nodes/unary/JSNotNode;

  protected boolean doBoolean(boolean);
    descriptor: (Z)Z
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.nodes.unary.JSNotNode this
        start local 1 // boolean a
         0: .line 109
            iload 1 /* a */
            ifeq 1
            iconst_0
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_1
      StackMap locals:
      StackMap stack: int
         2: ireturn
        end local 1 // boolean a
        end local 0 // com.oracle.truffle.js.nodes.unary.JSNotNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lcom/oracle/truffle/js/nodes/unary/JSNotNode;
            0    3     1     a  Z
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.dsl.Specialization()
    MethodParameters:
      Name  Flags
      a     

  protected boolean doNonBoolean(java.lang.Object, com.oracle.truffle.js.nodes.cast.JSToBooleanNode);
    descriptor: (Ljava/lang/Object;Lcom/oracle/truffle/js/nodes/cast/JSToBooleanNode;)Z
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // com.oracle.truffle.js.nodes.unary.JSNotNode this
        start local 1 // java.lang.Object a
        start local 2 // com.oracle.truffle.js.nodes.cast.JSToBooleanNode toBooleanNode
         0: .line 115
            aload 2 /* toBooleanNode */
            aload 1 /* a */
            invokevirtual com.oracle.truffle.js.nodes.cast.JSToBooleanNode.executeBoolean:(Ljava/lang/Object;)Z
            ifeq 1
            iconst_0
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_1
      StackMap locals:
      StackMap stack: int
         2: ireturn
        end local 2 // com.oracle.truffle.js.nodes.cast.JSToBooleanNode toBooleanNode
        end local 1 // java.lang.Object a
        end local 0 // com.oracle.truffle.js.nodes.unary.JSNotNode this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    3     0           this  Lcom/oracle/truffle/js/nodes/unary/JSNotNode;
            0    3     1              a  Ljava/lang/Object;
            0    3     2  toBooleanNode  Lcom/oracle/truffle/js/nodes/cast/JSToBooleanNode;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.dsl.Specialization()
    RuntimeInvisibleParameterAnnotations: 
      0:
      1:
        com.oracle.truffle.api.dsl.Cached(value = "create()")
    MethodParameters:
               Name  Flags
      a              
      toBooleanNode  

  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.unary.JSNotNode this
        start local 1 // java.lang.Class clazz
         0: .line 120
            aload 1 /* clazz */
            getstatic java.lang.Boolean.TYPE:Ljava/lang/Class;
            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.unary.JSNotNode this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0   this  Lcom/oracle/truffle/js/nodes/unary/JSNotNode;
            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=3, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.nodes.unary.JSNotNode this
         0: .line 125
            new java.lang.Error
            dup
            ldc "Unresolved compilation problem: \n\tJSNotNodeGen cannot be resolved\n"
            invokespecial java.lang.Error.<init>:(Ljava/lang/String;)V
            athrow
        end local 0 // com.oracle.truffle.js.nodes.unary.JSNotNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/js/nodes/unary/JSNotNode;
    Signature: (Ljava/util/Set<Ljava/lang/Class<+Lcom/oracle/truffle/api/instrumentation/Tag;>;>;)Lcom/oracle/truffle/js/nodes/JavaScriptNode;
    MethodParameters:
                  Name  Flags
      materializedTags  
}
SourceFile: "JSNotNode.java"
InnerClasses:
  public final UnaryOperationTag = com.oracle.truffle.js.nodes.instrumentation.JSTags$UnaryOperationTag of com.oracle.truffle.js.nodes.instrumentation.JSTags
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.nodes.NodeInfo(shortName = "!")