/guava/guava/src/com/google/common/collect/Synchronized.java
} return sortedSet( delegate( ).headSet( toElement) , mutex) ;
return sortedSet ( delegate ( ) .headSet ( toElement ) , mutex ) ; }
return sortedSet(delegate().subSet(fromElement, toElement), mutex); } } @Override public SortedSet<E> headSet(E toElement) { synchronized (mutex) { <extra_id_0> } @Override public SortedSet<E> tailSet(E fromElement) { synchronized (mutex) { return sortedSet(delegate().tailSet(fromElement), mutex); }