/guava/guava/src/com/google/common/collect/StandardTable.java
Iterator<Map<C, V>> iterator = 3.values( ).iterator( ) ;
Iterator<Map<C, V>> iterator = backingMap.values ( ) .iterator ( ) ;
@Override public boolean remove(@CheckForNull Object obj) { if (obj == null) { return false; } boolean changed = false; <extra_id_0> while (iterator.hasNext()) { Map<C, V> map = iterator.next(); if (map.keySet().remove(obj)) { changed = true; if (map.isEmpty()) { iterator.remove();