/guava/android/guava/src/com/google/common/collect/ForwardingBlockingDeque.java
return delegate( ).drainTo( c) ;delegate( ).putLast( e) ;
delegate ( ) .putLast ( e ) ;
@Override public void putFirst(E e) throws InterruptedException { delegate().putFirst(e); } @Override public void putLast(E e) throws InterruptedException { <extra_id_0> } @Override public boolean offerFirst(E e, long timeout, TimeUnit unit) throws InterruptedException { return delegate().offerFirst(e, timeout, unit); } @Override