public IEnumerable<IMessageResponse> GetResponse(ResponseContext context, RocketChatBot caller)
        {
            var message = context.Message;

            var search = message.Message.Replace(GiphyCommand, "").Trim();
            var url = GetGiphy(search);
            var attachment = new Attachment
            {
                ImageUrl = url
            };
            yield return message.CreateAttachmentReply(attachment);
        }
 public bool CanRespond(ResponseContext context)
 {
     var message = context.Message;
     return message.Message.StartsWith(GiphyCommand) && !message.Message.Equals(GiphyCommand);
 }