https://www.graalvm.org/ 
public final class com.oracle.truffle.api.object.dsl.Layout$DispatchDefaultValue
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: com.oracle.truffle.api.object.dsl.Layout$DispatchDefaultValue
  super_class: java.lang.Object
{
  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.api.object.dsl.Layout$DispatchDefaultValue this
         0: .line 258
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 259
            return
        end local 0 // com.oracle.truffle.api.object.dsl.Layout$DispatchDefaultValue this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lcom/oracle/truffle/api/object/dsl/Layout$DispatchDefaultValue;
}
SourceFile: "Layout.java"
NestHost: com.oracle.truffle.api.object.dsl.Layout
InnerClasses:
  public final DispatchDefaultValue = com.oracle.truffle.api.object.dsl.Layout$DispatchDefaultValue of com.oracle.truffle.api.object.dsl.Layout
    RuntimeVisibleAnnotations: 
      java.lang.Deprecated()