code: @Override
    protected void addDirectCallConstructor(MutableClass mutableClass) {
      MethodNode directCallConstructor = new MethodNode(Opcodes.ACC_PUBLIC,
          "<init>", "(" + DIRECT_OBJECT_MARKER_TYPE_DESC + mutableClass.classType.getDescriptor() + ")V", null, null);
      RobolectricGeneratorAdapter generator = new RobolectricGeneratorAdapter(directCallConstructor);
      generator.loadThis();
      String superName = mutableClass.classNode.superName;
      if (superName.equals("java/lang/Object")) {
        generator.visitMethodInsn(Opcodes.INVOKESPECIAL, superName, "<init>", "()V", false);
      } else {
        generator.loadArgs();
        generator.visitMethodInsn(Opcodes.INVOKESPECIAL, superName,
            "<init>", "(" + DIRECT_OBJECT_MARKER_TYPE_DESC + "L" + superName + ";)V", false);
      }
      generator.loadThis();
      generator.loadArg(1);
      generator.putField(mutableClass.classType, ShadowConstants.CLASS_HANDLER_DATA_FIELD_NAME, OBJECT_TYPE);
      generator.returnValue();
      mutableClass.addMethod(directCallConstructor);
    }
docs: Generates code like this:
  ```java
  public ThisClass(DirectObjectMarker dom, ThisClass domInstance) {
  super(dom, domInstance);
  __robo_data__ = domInstance;
  }
  ```