public Author ConvertToAuthor(object dataItem, AuthorConverterContext context)
        {
            ChatroomParticipant participant = (ChatroomParticipant)dataItem;
            Author author = this.AuthorsMap.GetOrCreateAuthor(participant);

            return(author);
        }
        public Author ConvertToAuthor(object dataItem, AuthorConverterContext context)
        {
            Participant participant = (Participant)dataItem;

            return(new Author()
            {
                Name = participant.ShortName,
                Avatar = participant.Avatar,
                Data = participant
            });
        }