<PackageReference Include="System.Reactive" Version="6.0.0-preview.13" />
    
    
	
	
		
		
		
	 
	
	
        
                
                ObservableBase<T>
                
                
Abstract base class for implementations of the  
IObservable<T> interface.
            
 
                
Subscribes the given observer to the observable sequence.
            
Implement this method with the core subscription logic for the observable sequence.