@VisibleForTesting
  void setTextInputClient(int client, TextInputChannel.Configuration configuration) {
    // Call notifyViewExited on the previous field.
    notifyViewExited();
    inputTarget = new InputTarget(InputTarget.Type.FRAMEWORK_CLIENT, client);

    if (mEditable != null) {
      mEditable.removeEditingStateListener(this);
    }
    mEditable =
        new ListenableEditingState(
            configuration.autofill != null ? configuration.autofill.editState : null, mView);   // <---- here 
    // more code ..
  }

  public void attachToFlutterEngine(@NonNull FlutterEngine flutterEngine) {
    Log.v(TAG, "Attaching to a FlutterEngine: " + flutterEngine);
    if (isAttachedToFlutterEngine()) {
      if (flutterEngine == this.flutterEngine) {
        // We are already attached to this FlutterEngine
        Log.v(TAG, "Already attached to this engine. Doing nothing.");
        return;
      }

      // Detach from a previous FlutterEngine so we can attach to this new one.
      Log.v(
          TAG,
          "Currently attached to a different engine. Detaching and then attaching"
              + " to new engine.");
      detachFromFlutterEngine();
    }

    this.flutterEngine = flutterEngine;

    // Instruct our FlutterRenderer that we are now its designated RenderSurface.
    FlutterRenderer flutterRenderer = this.flutterEngine.getRenderer();
    isFlutterUiDisplayed = flutterRenderer.isDisplayingFlutterUi();
    renderSurface.attachToRenderer(flutterRenderer);
    flutterRenderer.addIsDisplayingFlutterUiListener(flutterUiDisplayListener);

    // Initialize various components that know how to process Android View I/O
    // in a way that Flutter understands.
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
      mouseCursorPlugin = new MouseCursorPlugin(this, this.flutterEngine.getMouseCursorChannel());
    }
    textInputPlugin = 
        new TextInputPlugin(
            this,
            this.flutterEngine.getTextInputChannel(),
            this.flutterEngine.getPlatformViewsController());   // <---- here new instance

  @VisibleForTesting
  void setTextInputClient(int client, TextInputChannel.Configuration configuration) {
    // Call notifyViewExited on the previous field.
    notifyViewExited();
    inputTarget = new InputTarget(InputTarget.Type.FRAMEWORK_CLIENT, client);

    if (mEditable != null) {
      mEditable.removeEditingStateListener(this);
    }
    mEditable =
        new ListenableEditingState(
            configuration.autofill != null ? configuration.autofill.editState : null, mView);
    this.configuration = configuration;
    updateAutofillConfigurationIfNeeded(configuration);

    // setTextInputClient will be followed by a call to setTextInputEditingState.
    // Do a restartInput at that time.
    mRestartInputPending = true;
    unlockPlatformViewInputConnection();
    lastClientRect = null;
    mEditable.addEditingStateListener(this);
  }