public ConfigItemProperty(ConfigManager configManager, object o, PropertyInfo p, INotifyPropertyChanged monitor)
     : this(configManager, new ValueProperty <T>(o, p), monitor)
 {
 }
 public ConfigItemProperty(ConfigManager configManager, object o, PropertyInfo p)
     : this(configManager, new ValueProperty <T>(o, p), o as INotifyPropertyChanged)
 {
 }