/guava/guava/src/com/google/common/collect/Synchronized.java
return delegate( ).containsColumn( rowKey) ;
return delegate ( ) .containsColumn ( columnKey ) ;
return delegate().containsRow(rowKey); } } @Override public boolean containsColumn(@CheckForNull Object columnKey) { synchronized (mutex) { <extra_id_0> } } @Override public boolean containsValue(@CheckForNull Object value) { synchronized (mutex) { return delegate().containsValue(value);