public static HistoryDto AsDto(this HistoryDocument document)
 => new HistoryDto
 {
     Id            = document.Id,
     IssueId       = document.IssueId,
     UserId        = document.UserId,
     Action        = document.Action,
     CreatedAt     = document.CreatedAt,
     ChangedFields = document.ChangedFields
 };
 public static History AsEntity(this HistoryDocument document)
 => new History(document.Id, document.IssueId, document.UserId, document.Action, document.CreatedAt, document.ChangedFields);