public bool AddAuthor(Author author)
 {
     if (author == null)
     {
         return(false);
     }
     return(AuthorProcessor.ProcessAuthor(author));
 }
 public bool DeleteAuthor(int id)
 {
     return(AuthorProcessor.DeleteAuthor(id));
 }
 public bool PutAuthor([FromBody] Author author)
 {
     return(AuthorProcessor.PutAuthor(author));
 }
 public List <Author> GetAuthors(string lastName)
 {
     return(AuthorProcessor.GetAuthors(lastName));
 }
 public Author GetAuthor(int id)
 {
     return(AuthorProcessor.GetAuthor(id));
 }