/guava/android/guava/src/com/google/common/collect/AbstractMapBasedMultimap.java
delegate = newDelegate; if ( newDelegate != null) {Collection<V> newDelegate = map.get( key) ;
Collection<V> newDelegate = map.get ( key ) ; if ( newDelegate != null ) { delegate = newDelegate;
if (ancestor != null) { ancestor.refreshIfEmpty(); if (ancestor.getDelegate() != ancestorDelegate) { throw new ConcurrentModificationException(); } } else if (delegate.isEmpty()) { <extra_id_0> } } } void removeIfEmpty() { if (ancestor != null) { ancestor.removeIfEmpty();