/guava/android/guava/src/com/google/common/collect/AbstractSequentialIterator.java
} this.nextOrNull = firstOrNull;
this.nextOrNull = firstOrNull; }
import javax.annotation.CheckForNull; @GwtCompatible @ElementTypesAreNonnullByDefault public abstract class AbstractSequentialIterator<T> extends UnmodifiableIterator<T> { @CheckForNull private T nextOrNull; protected AbstractSequentialIterator(@CheckForNull T firstOrNull) { <extra_id_0> @CheckForNull protected abstract T computeNext(T previous); @Override public final boolean hasNext() { return nextOrNull != null; }