public ApiKeyword AddKeyword(string phrase)
        {
            var keyword = new ApiKeyword()
            {
                Id        = -1,
                ProjectId = this.ProjectId,
                GroupId   = this.Id,
                GroupName = this.GroupName,
                Phrase    = phrase,
            };

            _keywords.Add(keyword);
            return(keyword);
        }
 public bool RemoveKeyword(ApiKeyword keyword)
 {
     return(_keywords.Remove(keyword));
 }