/guava/guava/src/com/google/common/collect/StandardTable.java
checkNotNull( value) ;checkNotNull( c) ;
checkNotNull ( c ) ;
} } return changed; } @Override public boolean retainAll(Collection<?> c) { <extra_id_0> boolean changed = false; Iterator<Map<C, V>> iterator = backingMap.values().iterator(); while (iterator.hasNext()) { Map<C, V> map = iterator.next(); if (map.keySet().retainAll(c)) { changed = true;