https://www.graalvm.org/ 
public class com.oracle.truffle.js.nodes.binary.JSOrNode extends com.oracle.truffle.js.nodes.binary.JSLogicalNode
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: com.oracle.truffle.js.nodes.binary.JSOrNode
  super_class: com.oracle.truffle.js.nodes.binary.JSLogicalNode
{
  public void <init>(com.oracle.truffle.js.nodes.JavaScriptNode, com.oracle.truffle.js.nodes.JavaScriptNode);
    descriptor: (Lcom/oracle/truffle/js/nodes/JavaScriptNode;Lcom/oracle/truffle/js/nodes/JavaScriptNode;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=3, args_size=3
        start local 0 // com.oracle.truffle.js.nodes.binary.JSOrNode this
        start local 1 // com.oracle.truffle.js.nodes.JavaScriptNode left
        start local 2 // com.oracle.truffle.js.nodes.JavaScriptNode right
         0: .line 54
            aload 0 /* this */
            aload 1 /* left */
            aload 2 /* right */
            iconst_0
            invokespecial com.oracle.truffle.js.nodes.binary.JSLogicalNode.<init>:(Lcom/oracle/truffle/js/nodes/JavaScriptNode;Lcom/oracle/truffle/js/nodes/JavaScriptNode;Z)V
         1: .line 55
            return
        end local 2 // com.oracle.truffle.js.nodes.JavaScriptNode right
        end local 1 // com.oracle.truffle.js.nodes.JavaScriptNode left
        end local 0 // com.oracle.truffle.js.nodes.binary.JSOrNode this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0   this  Lcom/oracle/truffle/js/nodes/binary/JSOrNode;
            0    2     1   left  Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            0    2     2  right  Lcom/oracle/truffle/js/nodes/JavaScriptNode;
    MethodParameters:
       Name  Flags
      left   
      right  

  public static com.oracle.truffle.js.nodes.binary.JSOrNode create(com.oracle.truffle.js.nodes.JavaScriptNode, com.oracle.truffle.js.nodes.JavaScriptNode);
    descriptor: (Lcom/oracle/truffle/js/nodes/JavaScriptNode;Lcom/oracle/truffle/js/nodes/JavaScriptNode;)Lcom/oracle/truffle/js/nodes/binary/JSOrNode;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.nodes.JavaScriptNode left
        start local 1 // com.oracle.truffle.js.nodes.JavaScriptNode right
         0: .line 58
            new com.oracle.truffle.js.nodes.binary.JSOrNode
            dup
            aload 0 /* left */
            aload 1 /* right */
            invokespecial com.oracle.truffle.js.nodes.binary.JSOrNode.<init>:(Lcom/oracle/truffle/js/nodes/JavaScriptNode;Lcom/oracle/truffle/js/nodes/JavaScriptNode;)V
            areturn
        end local 1 // com.oracle.truffle.js.nodes.JavaScriptNode right
        end local 0 // com.oracle.truffle.js.nodes.JavaScriptNode left
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0   left  Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            0    1     1  right  Lcom/oracle/truffle/js/nodes/JavaScriptNode;
    MethodParameters:
       Name  Flags
      left   
      right  

  public static com.oracle.truffle.js.nodes.binary.JSOrNode createNotUndefinedOr(com.oracle.truffle.js.nodes.JavaScriptNode, com.oracle.truffle.js.nodes.JavaScriptNode);
    descriptor: (Lcom/oracle/truffle/js/nodes/JavaScriptNode;Lcom/oracle/truffle/js/nodes/JavaScriptNode;)Lcom/oracle/truffle/js/nodes/binary/JSOrNode;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.nodes.JavaScriptNode left
        start local 1 // com.oracle.truffle.js.nodes.JavaScriptNode right
         0: .line 62
            new com.oracle.truffle.js.nodes.binary.JSOrNode$NotUndefinedOrNode
            dup
            aload 0 /* left */
            aload 1 /* right */
            invokespecial com.oracle.truffle.js.nodes.binary.JSOrNode$NotUndefinedOrNode.<init>:(Lcom/oracle/truffle/js/nodes/JavaScriptNode;Lcom/oracle/truffle/js/nodes/JavaScriptNode;)V
            areturn
        end local 1 // com.oracle.truffle.js.nodes.JavaScriptNode right
        end local 0 // com.oracle.truffle.js.nodes.JavaScriptNode left
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0   left  Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            0    1     1  right  Lcom/oracle/truffle/js/nodes/JavaScriptNode;
    MethodParameters:
       Name  Flags
      left   
      right  

  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.binary.JSOrNode this
        start local 1 // java.lang.Class clazz
         0: .line 67
            aload 0 /* this */
            invokevirtual com.oracle.truffle.js.nodes.binary.JSOrNode.getLeft:()Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            aload 1 /* clazz */
            invokevirtual com.oracle.truffle.js.nodes.JavaScriptNode.isResultAlwaysOfType:(Ljava/lang/Class;)Z
            ifeq 1
            aload 0 /* this */
            invokevirtual com.oracle.truffle.js.nodes.binary.JSOrNode.getRight:()Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            aload 1 /* clazz */
            invokevirtual com.oracle.truffle.js.nodes.JavaScriptNode.isResultAlwaysOfType:(Ljava/lang/Class;)Z
            ifeq 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.binary.JSOrNode this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0   this  Lcom/oracle/truffle/js/nodes/binary/JSOrNode;
            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=5, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.nodes.binary.JSOrNode this
        start local 1 // java.util.Set materializedTags
         0: .line 72
            new com.oracle.truffle.js.nodes.binary.JSOrNode
            dup
            aload 0 /* this */
            invokevirtual com.oracle.truffle.js.nodes.binary.JSOrNode.getLeft:()Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            aload 1 /* materializedTags */
            invokestatic com.oracle.truffle.js.nodes.binary.JSOrNode.cloneUninitialized:(Lcom/oracle/truffle/js/nodes/JavaScriptNode;Ljava/util/Set;)Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            aload 0 /* this */
            invokevirtual com.oracle.truffle.js.nodes.binary.JSOrNode.getRight:()Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            aload 1 /* materializedTags */
            invokestatic com.oracle.truffle.js.nodes.binary.JSOrNode.cloneUninitialized:(Lcom/oracle/truffle/js/nodes/JavaScriptNode;Ljava/util/Set;)Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            invokespecial com.oracle.truffle.js.nodes.binary.JSOrNode.<init>:(Lcom/oracle/truffle/js/nodes/JavaScriptNode;Lcom/oracle/truffle/js/nodes/JavaScriptNode;)V
            areturn
        end local 1 // java.util.Set materializedTags
        end local 0 // com.oracle.truffle.js.nodes.binary.JSOrNode this
      LocalVariableTable:
        Start  End  Slot              Name  Signature
            0    1     0              this  Lcom/oracle/truffle/js/nodes/binary/JSOrNode;
            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  
}
SourceFile: "JSOrNode.java"
NestMembers:
  com.oracle.truffle.js.nodes.binary.JSOrNode$NotUndefinedOrNode
InnerClasses:
  public NotUndefinedOrNode = com.oracle.truffle.js.nodes.binary.JSOrNode$NotUndefinedOrNode of com.oracle.truffle.js.nodes.binary.JSOrNode
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.nodes.NodeInfo(shortName = "||")