https://www.graalvm.org/ 
public abstract class com.oracle.truffle.js.runtime.builtins.JSArrayBufferViewBase extends com.oracle.truffle.js.runtime.objects.JSNonProxyObject
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: com.oracle.truffle.js.runtime.builtins.JSArrayBufferViewBase
  super_class: com.oracle.truffle.js.runtime.objects.JSNonProxyObject
{
  final com.oracle.truffle.js.runtime.builtins.JSArrayBufferObject arrayBuffer;
    descriptor: Lcom/oracle/truffle/js/runtime/builtins/JSArrayBufferObject;
    flags: (0x0010) ACC_FINAL

  int length;
    descriptor: I
    flags: (0x0000) 

  int offset;
    descriptor: I
    flags: (0x0000) 

  protected void <init>(com.oracle.truffle.api.object.Shape, com.oracle.truffle.js.runtime.builtins.JSArrayBufferObject, int, int);
    descriptor: (Lcom/oracle/truffle/api/object/Shape;Lcom/oracle/truffle/js/runtime/builtins/JSArrayBufferObject;II)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=5, args_size=5
        start local 0 // com.oracle.truffle.js.runtime.builtins.JSArrayBufferViewBase this
        start local 1 // com.oracle.truffle.api.object.Shape shape
        start local 2 // com.oracle.truffle.js.runtime.builtins.JSArrayBufferObject arrayBuffer
        start local 3 // int length
        start local 4 // int offset
         0: .line 55
            aload 0 /* this */
            aload 1 /* shape */
            invokespecial com.oracle.truffle.js.runtime.objects.JSNonProxyObject.<init>:(Lcom/oracle/truffle/api/object/Shape;)V
         1: .line 56
            aload 0 /* this */
            aload 2 /* arrayBuffer */
            invokestatic java.util.Objects.requireNonNull:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast com.oracle.truffle.js.runtime.builtins.JSArrayBufferObject
            putfield com.oracle.truffle.js.runtime.builtins.JSArrayBufferViewBase.arrayBuffer:Lcom/oracle/truffle/js/runtime/builtins/JSArrayBufferObject;
         2: .line 57
            aload 0 /* this */
            iload 3 /* length */
            putfield com.oracle.truffle.js.runtime.builtins.JSArrayBufferViewBase.length:I
         3: .line 58
            aload 0 /* this */
            iload 4 /* offset */
            putfield com.oracle.truffle.js.runtime.builtins.JSArrayBufferViewBase.offset:I
         4: .line 59
            return
        end local 4 // int offset
        end local 3 // int length
        end local 2 // com.oracle.truffle.js.runtime.builtins.JSArrayBufferObject arrayBuffer
        end local 1 // com.oracle.truffle.api.object.Shape shape
        end local 0 // com.oracle.truffle.js.runtime.builtins.JSArrayBufferViewBase this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    5     0         this  Lcom/oracle/truffle/js/runtime/builtins/JSArrayBufferViewBase;
            0    5     1        shape  Lcom/oracle/truffle/api/object/Shape;
            0    5     2  arrayBuffer  Lcom/oracle/truffle/js/runtime/builtins/JSArrayBufferObject;
            0    5     3       length  I
            0    5     4       offset  I
    MethodParameters:
             Name  Flags
      shape        
      arrayBuffer  
      length       
      offset       

  public final com.oracle.truffle.js.runtime.builtins.JSArrayBufferObject getArrayBuffer();
    descriptor: ()Lcom/oracle/truffle/js/runtime/builtins/JSArrayBufferObject;
    flags: (0x0011) ACC_PUBLIC, ACC_FINAL
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.js.runtime.builtins.JSArrayBufferViewBase this
         0: .line 62
            aload 0 /* this */
            getfield com.oracle.truffle.js.runtime.builtins.JSArrayBufferViewBase.arrayBuffer:Lcom/oracle/truffle/js/runtime/builtins/JSArrayBufferObject;
            areturn
        end local 0 // com.oracle.truffle.js.runtime.builtins.JSArrayBufferViewBase this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/js/runtime/builtins/JSArrayBufferViewBase;
}
SourceFile: "JSArrayBufferViewBase.java"