/// <summary>
 /// Get an entity from the repository by id.
 /// </summary>
 /// <param name="id">The id parameter.</param>
 /// <returns>
 /// Return an entity, or null case the entity does not exists.
 /// </returns>
 public TEntity GetById(object id)
 {
     return(m_domainContext.GetById <TEntity>(id));
 }