Observer (client 0.17.1-SNAPSHOT API)

```
public interface Observer<V>
```
An object used to receive results of a Queryer.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onCompleted()`	Receives a notification of successful completion.
`void`	`onError(Throwable t)`	Receives a terminating error.
`void`	`onNext(V value)`	Receives a value.

- Method Detail
  - onNext
```
void onNext(V value)
```
    Receives a value.
    
    Parameters:
    
    value - the value received
  - onError
```
void onError(Throwable t)
```
    Receives a terminating error.
    
    Parameters:
    
    t - the error occurred
  - onCompleted
```
void onCompleted()
```
    Receives a notification of successful completion.