import checkers.nullness.quals.*;
public class NullableGeneric<T> {
public static class Pair<T1 extends @Nullable Object,T2 extends @Nullable Object> {
public @Nullable T1 a;
public @Nullable T2 b;
public Pair(T1 a, T2 b) {
this.a = a;
this.b = b;
}
}
@Nullable T next1 = null, next2 = null;
private Pair<@Nullable T,@Nullable T> return1() {
Pair<@Nullable T,@Nullable T> result = new Pair<@Nullable T,@Nullable T>(next1, (T)null);
// setnext1();
return result;
}
public static <T3> @NonNull T3 checkNotNull(@Nullable T3 object) {
if (object == null) {
throw new NullPointerException();
} else {
return object;
}
}
}