code: public byte[] toBytes(JDKVersion version) {
          ClassNode node = new ClassNode();
          node.version = version.getVer();
          node.access = this.access | ACC_SUPER;
          node.name = this.className;
          node.superName = this.superClassName;
          node.sourceFile = this.sourceFile;
          node.sourceDebug = this.sourceDebug;
  
          if (parentClassName != null) {
              node.visitOuterClass(parentClassName, null, null);
          }
  
          for (ChildEntry child : childClasses) {
              node.visitInnerClass(child.getClassName(), className, child.getInnerName(), child.getAccess());
          }
  
          if (!this.interfaces.isEmpty()) {
              node.interfaces.addAll(this.interfaces);
          }
  
          for (MethodDefinition def : methods) {
              node.methods.add(def.getMethodNode());
          }
  
          for (FieldDefinition def : fields) {
              node.fields.add(def.getFieldNode());
          }
  
          if (node.visibleAnnotations == null) {
              node.visibleAnnotations = new ArrayList<AnnotationNode>();
          }
  
          for (VisibleAnnotation a : annotations) {
              node.visibleAnnotations.add(a.getNode());
          }
  
          ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
          node.accept(cw);
          return cw.toByteArray();
      }
docs: Convert this class representation to JDK bytecode
  
  @param version the desired JDK version
  @return the bytecode representation of this class