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Interface defining an output consumer that can be bound to an output channel.
The same instance can be safely bound to different output channels.

The typical lifecycle of a consumer object is the following:


                     |    |        |
                     V    V        |
               ----------------    |
               |  onOutput()  |----
                     |    |
                     |    |
               ------      ------
       |      |                  |      |
       V      V                  V      V
   ----------------          ----------------
   | onComplete() |          |  onError()   |
   ----------------          ----------------

Created by davide-maestroni on 9/7/14.

<OUTPUT> the output data type.
public interface OutputConsumer<OUTPUT> {

Called when the channel closes after the invocation completes its execution.
    void onComplete();

Called when the bounded channel transfer is aborted.

error the reason of the abortion.
    void onError(@Nullable RoutineException error);

Called when an output is passed to the channel.

output the output.
    void onOutput(OUTPUT output);
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