https://www.graalvm.org/ 
public final class com.oracle.truffle.js.nodes.array.JSGetLengthNode extends com.oracle.truffle.js.nodes.JavaScriptBaseNode
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: com.oracle.truffle.js.nodes.array.JSGetLengthNode
  super_class: com.oracle.truffle.js.nodes.JavaScriptBaseNode
{
  private com.oracle.truffle.js.nodes.array.GetLengthHelperNode getLengthHelperNode;
    descriptor: Lcom/oracle/truffle/js/nodes/array/GetLengthHelperNode;
    flags: (0x0002) ACC_PRIVATE
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.nodes.Node$Child()

  private com.oracle.truffle.js.nodes.access.IsArrayNode isArrayNode;
    descriptor: Lcom/oracle/truffle/js/nodes/access/IsArrayNode;
    flags: (0x0002) ACC_PRIVATE
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.nodes.Node$Child()

  private void <init>(com.oracle.truffle.js.runtime.JSContext);
    descriptor: (Lcom/oracle/truffle/js/runtime/JSContext;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.nodes.array.JSGetLengthNode this
        start local 1 // com.oracle.truffle.js.runtime.JSContext context
         0: .line 51
            aload 0 /* this */
            invokespecial com.oracle.truffle.js.nodes.JavaScriptBaseNode.<init>:()V
         1: .line 52
            aload 0 /* this */
            aload 1 /* context */
            invokestatic com.oracle.truffle.js.nodes.array.GetLengthHelperNode.create:(Lcom/oracle/truffle/js/runtime/JSContext;)Lcom/oracle/truffle/js/nodes/array/GetLengthHelperNode;
            putfield com.oracle.truffle.js.nodes.array.JSGetLengthNode.getLengthHelperNode:Lcom/oracle/truffle/js/nodes/array/GetLengthHelperNode;
         2: .line 53
            aload 0 /* this */
            invokestatic com.oracle.truffle.js.nodes.access.IsArrayNode.createIsArray:()Lcom/oracle/truffle/js/nodes/access/IsArrayNode;
            putfield com.oracle.truffle.js.nodes.array.JSGetLengthNode.isArrayNode:Lcom/oracle/truffle/js/nodes/access/IsArrayNode;
         3: .line 54
            return
        end local 1 // com.oracle.truffle.js.runtime.JSContext context
        end local 0 // com.oracle.truffle.js.nodes.array.JSGetLengthNode this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    4     0     this  Lcom/oracle/truffle/js/nodes/array/JSGetLengthNode;
            0    4     1  context  Lcom/oracle/truffle/js/runtime/JSContext;
    MethodParameters:
         Name  Flags
      context  

  public static com.oracle.truffle.js.nodes.array.JSGetLengthNode create(com.oracle.truffle.js.runtime.JSContext);
    descriptor: (Lcom/oracle/truffle/js/runtime/JSContext;)Lcom/oracle/truffle/js/nodes/array/JSGetLengthNode;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // com.oracle.truffle.js.runtime.JSContext context
         0: .line 57
            new com.oracle.truffle.js.nodes.array.JSGetLengthNode
            dup
            aload 0 /* context */
            invokespecial com.oracle.truffle.js.nodes.array.JSGetLengthNode.<init>:(Lcom/oracle/truffle/js/runtime/JSContext;)V
            areturn
        end local 0 // com.oracle.truffle.js.runtime.JSContext context
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    1     0  context  Lcom/oracle/truffle/js/runtime/JSContext;
    MethodParameters:
         Name  Flags
      context  

  public java.lang.Object execute(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.nodes.array.JSGetLengthNode this
        start local 1 // java.lang.Object value
         0: .line 61
            aload 0 /* this */
            getfield com.oracle.truffle.js.nodes.array.JSGetLengthNode.getLengthHelperNode:Lcom/oracle/truffle/js/nodes/array/GetLengthHelperNode;
            aload 1 /* value */
            aload 0 /* this */
            getfield com.oracle.truffle.js.nodes.array.JSGetLengthNode.isArrayNode:Lcom/oracle/truffle/js/nodes/access/IsArrayNode;
            aload 1 /* value */
            invokevirtual com.oracle.truffle.js.nodes.access.IsArrayNode.execute:(Ljava/lang/Object;)Z
            invokevirtual com.oracle.truffle.js.nodes.array.GetLengthHelperNode.execute:(Ljava/lang/Object;Z)Ljava/lang/Object;
            areturn
        end local 1 // java.lang.Object value
        end local 0 // com.oracle.truffle.js.nodes.array.JSGetLengthNode this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0   this  Lcom/oracle/truffle/js/nodes/array/JSGetLengthNode;
            0    1     1  value  Ljava/lang/Object;
    MethodParameters:
       Name  Flags
      value  

  public long executeLong(java.lang.Object);
    descriptor: (Ljava/lang/Object;)J
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.nodes.array.JSGetLengthNode this
        start local 1 // java.lang.Object value
         0: .line 65
            aload 0 /* this */
            getfield com.oracle.truffle.js.nodes.array.JSGetLengthNode.getLengthHelperNode:Lcom/oracle/truffle/js/nodes/array/GetLengthHelperNode;
            aload 1 /* value */
            aload 0 /* this */
            getfield com.oracle.truffle.js.nodes.array.JSGetLengthNode.isArrayNode:Lcom/oracle/truffle/js/nodes/access/IsArrayNode;
            aload 1 /* value */
            invokevirtual com.oracle.truffle.js.nodes.access.IsArrayNode.execute:(Ljava/lang/Object;)Z
            invokevirtual com.oracle.truffle.js.nodes.array.GetLengthHelperNode.executeLong:(Ljava/lang/Object;Z)J
            lreturn
        end local 1 // java.lang.Object value
        end local 0 // com.oracle.truffle.js.nodes.array.JSGetLengthNode this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0   this  Lcom/oracle/truffle/js/nodes/array/JSGetLengthNode;
            0    1     1  value  Ljava/lang/Object;
    MethodParameters:
       Name  Flags
      value  
}
SourceFile: "JSGetLengthNode.java"
InnerClasses:
  public abstract Child = com.oracle.truffle.api.nodes.Node$Child of com.oracle.truffle.api.nodes.Node