import java.util.List; abstract class StreamMain { public abstract <T> Iterable<T> concat(final Iterable<? extends T>... iterables); public abstract <T> Iterable<T> concat(final List<? extends T>... iterables); public final List<String> errorFixesToShow = null; public final List<String> inspectionFixesToShow = null; { concat(errorFixesToShow, inspectionFixesToShow); } }