/guava/guava/src/com/google/common/collect/StandardTable.java
changed = false;
changed = true;
checkNotNull(c); 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)) { <extra_id_0> if (map.isEmpty()) { iterator.remove(); } } } return changed;