# messageSendingCallback method

1. @visibleForTesting

List <XMLNode> messageSendingCallback(

1. TypedMap <StanzaHandlerExtension> extensions

)

## Implementation

    @visibleForTesting
    List<XMLNode> messageSendingCallback(
      TypedMap<StanzaHandlerExtension> extensions,
    ) {
      final data = extensions.get<ReplyData>();
      return data != null
          ? [
              XMLNode.xmlns(
                tag: 'reply',
                xmlns: replyXmlns,
                attributes: {
                  // The to attribute is optional
                  if (data.jid != null) 'to': data.jid!.toString(),

                  'id': data.id,
                },
              ),
              if (data.body != null)
                XMLNode(
                  tag: 'body',
                  text: data.body,
                ),
              if (data.body != null)
                XMLNode.xmlns(
                  tag: 'fallback',
                  xmlns: fallbackXmlns,
                  attributes: {'for': replyXmlns},
                  children: [
                    XMLNode(
                      tag: 'body',
                      attributes: {
                        'start': data.start!.toString(),
                        'end': data.end!.toString(),
                      },
                    ),
                  ],
                ),
            ]
          : [];
    }