library/src/main/java/com/github/pwittchen/reactivesensors/library/ReactiveSensorFilter.java
public static Predicate<ReactiveSensorEvent> filterAccuracyChanged() {

    return new Predicate<ReactiveSensorEvent>() {
      @Override public boolean test(ReactiveSensorEvent event) throws Exception {
        return event.isAccuracyChanged();
      }
    };
  }
public static Predicate<ReactiveSensorEvent> filterAccuracyChanged() {

    return new Predicate<ReactiveSensorEvent>() {
      @Override public boolean test(ReactiveSensorEvent event) throws Exception {
        return event.isAccuracyChanged();
      }
    };
  }
Predicate, which can be used in filter(...) method from RxJava
to filter all events in which accuracy value has changed

@return BiPredicate<ReactiveSensorEvent, Boolean> predicate indicating if accuracy value has
changed