code: private View inflateMessageView() {
          if (getRootView() != null) {
              inflateMessageContainer();
  
              if (customMessageView != null) {
                  messageContainer.addView(customMessageView);
              } else if (customMessageViewId != -1) {
                  LayoutInflater layoutInflater = LayoutInflater.from(getContext());
                  View view = layoutInflater.inflate(customMessageViewId, messageContainer, false);
                  messageContainer.addView(view);
              } else {
                  LayoutInflater layoutInflater = LayoutInflater.from(getContext());
                  View view = layoutInflater
                          .inflate(R.layout.material_dialog_message, messageContainer, false);
                  messageContainer.addView(view);
              }
  
              View messageView = messageContainer.findViewById(android.R.id.message);
              messageTextView = messageView instanceof TextView ? (TextView) messageView : null;
              return messageContainer;
          }
  
          return null;
      }
docs: Inflates the view, which is used to show the dialog's message. The view may either be the
  default one or a custom view, if one has been set before.
  
  @return The view, which has been inflated, as an instance of the class {@link View} or null,
  if no view has been inflated