public override TValue GetValue <TValue>(IProperty property)
 => InternalEntry.GetOriginalValue <TValue>(InternalEntry.EntityType.CheckPropertyBelongsToType(property));
 protected override object?GetValueInternal(IProperty property)
 => InternalEntry.GetOriginalValue(property);
 public override TValue GetValue <TValue>(string propertyName)
 => InternalEntry.GetOriginalValue <TValue>(InternalEntry.EntityType.GetProperty(propertyName));