@Override public boolean add(E e) { if (offer(e)) return true; else throw new IllegalStateException(); }
@Override public boolean add(E e) { return offer(e); }
@Override public boolean add(E e) { return offer(e); }
@Override public boolean add(E e) { return offer(e); }
@Override public boolean add(E e) { return offer(e); }
@Override public boolean add(E e) { if (offer(e)) return true; else throw new IllegalStateException(); }
@Override public boolean add(E e) { if (offer(e)) return true; else throw new IllegalStateException(); }
@Override public boolean add(E e) { if (offer(e)) return true; else throw new IllegalStateException(); }
@Override public boolean add(E e) { if (offer(e)) return true; else throw new IllegalStateException(); }