Пример #1
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 public RedheadDuck()
 {
     _observable = new Observable(this);
 }
Пример #2
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 public DuckCall()
 {
     _observable = new Observable(this);
 }
Пример #3
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 public MallardDuck()
 {
     _observable = new Observable(this);
 }
Пример #4
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 public RubberDuck()
 {
     _observable = new Observable(this);
 }