| io.reactivex.MaybeSource<T> | 
|  Known Indirect Subclasses 
          
            
              Maybe<T>,
            
              MaybeSubject<T>
            
          
       | 
Represents a basic Maybe source base interface,
 consumable via an MaybeObserver.
 
 This class also serves the base type for custom operators wrapped into
 Maybe via create(MaybeOnSubscribe).
| Public Methods | |||||||||||
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| abstract void | subscribe(MaybeObserver<? super T> observer) Subscribes the given MaybeObserver to this MaybeSource instance. | ||||||||||
Subscribes the given MaybeObserver to this MaybeSource instance.
| observer | the MaybeObserver, not null | 
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| NullPointerException | if observeris null | 
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