/// <inheritdoc/> public async Task <Message> SendMessageAsync(ISendableMessage sendMessage) { if (sendMessage.HasLocalFile()) { return(await TeamsClient.PostMultiPartResultAsync <Message, ISendableMessage>(WxTeamsConstants.MessagesUrl, sendMessage)); } return(await TeamsClient.PostResultAsync <Message, ISendableMessage>(WxTeamsConstants.MessagesUrl, sendMessage)); }