public static AuthorBuilder BuildAuthorByRequest(this AuthorBuilder authorBuilder, CreateAuthorRequest request)
 {
     return(authorBuilder?
            .WithFirstName(request?.FirstName)
            .WithLastName(request?.LastName)
            .WithUsername(request?.Username)
            .WithPassword(request?.Password)
            .WithEmail(request?.Email)
            .WithBio(request?.Bio)
            .WithAvatar(request?.Avatar));
 }