public DateTimePropertyDescription(Expression <Func <TEntity, DateTime> > propertySelector, string displayName, PropertyGroupDescription <TEntity> assignedGroup)
     : base(propertySelector, displayName, new DateTimeNotMinNorMaxValueValidator <TEntity>(), assignedGroup)
 {
 }
 public DateTimePropertyDescription(Expression <Func <TEntity, DateTime> > propertySelector, string displayName, IValidator <DateTime> validator, PropertyGroupDescription <TEntity> assignedGroup)
     : base(propertySelector, displayName, validator, assignedGroup)
 {
 }