https://www.graalvm.org/ 
public abstract class com.oracle.truffle.js.nodes.array.ArrayLengthNode extends com.oracle.truffle.js.nodes.JavaScriptBaseNode
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: com.oracle.truffle.js.nodes.array.ArrayLengthNode
  super_class: com.oracle.truffle.js.nodes.JavaScriptBaseNode
{
  protected static final int MAX_TYPE_COUNT;
    descriptor: I
    flags: (0x001c) ACC_PROTECTED, ACC_STATIC, ACC_FINAL
    ConstantValue: 4

  protected void <init>();
    descriptor: ()V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.js.nodes.array.ArrayLengthNode this
         0: .line 67
            aload 0 /* this */
            invokespecial com.oracle.truffle.js.nodes.JavaScriptBaseNode.<init>:()V
         1: .line 68
            return
        end local 0 // com.oracle.truffle.js.nodes.array.ArrayLengthNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lcom/oracle/truffle/js/nodes/array/ArrayLengthNode;

  protected static com.oracle.truffle.js.runtime.array.ScriptArray getArrayType(com.oracle.truffle.api.object.DynamicObject);
    descriptor: (Lcom/oracle/truffle/api/object/DynamicObject;)Lcom/oracle/truffle/js/runtime/array/ScriptArray;
    flags: (0x000c) ACC_PROTECTED, ACC_STATIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.api.object.DynamicObject target
         0: .line 71
            aload 0 /* target */
            invokestatic com.oracle.truffle.js.runtime.objects.JSObject.getArray:(Lcom/oracle/truffle/api/object/DynamicObject;)Lcom/oracle/truffle/js/runtime/array/ScriptArray;
            areturn
        end local 0 // com.oracle.truffle.api.object.DynamicObject target
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    1     0  target  Lcom/oracle/truffle/api/object/DynamicObject;
    MethodParameters:
        Name  Flags
      target  
}
SourceFile: "ArrayLengthNode.java"
NestMembers:
  com.oracle.truffle.js.nodes.array.ArrayLengthNode$ArrayLengthReadNode  com.oracle.truffle.js.nodes.array.ArrayLengthNode$ArrayLengthWriteNode  com.oracle.truffle.js.nodes.array.ArrayLengthNode$SetArrayLengthNode  com.oracle.truffle.js.nodes.array.ArrayLengthNode$SetArrayLengthOrDeleteNode
InnerClasses:
  public abstract ArrayLengthReadNode = com.oracle.truffle.js.nodes.array.ArrayLengthNode$ArrayLengthReadNode of com.oracle.truffle.js.nodes.array.ArrayLengthNode
  public abstract ArrayLengthWriteNode = com.oracle.truffle.js.nodes.array.ArrayLengthNode$ArrayLengthWriteNode of com.oracle.truffle.js.nodes.array.ArrayLengthNode
  public abstract SetArrayLengthNode = com.oracle.truffle.js.nodes.array.ArrayLengthNode$SetArrayLengthNode of com.oracle.truffle.js.nodes.array.ArrayLengthNode
  public abstract SetArrayLengthOrDeleteNode = com.oracle.truffle.js.nodes.array.ArrayLengthNode$SetArrayLengthOrDeleteNode of com.oracle.truffle.js.nodes.array.ArrayLengthNode
    RuntimeInvisibleAnnotations: 
      com.oracle.truffle.api.dsl.ImportStatic(value = {Lcom/oracle/truffle/js/runtime/array/ScriptArray;})