question: public void clear ( ) { messages = Collections . emptyList ( ) ; isMessagesListMutable = false ; if ( builders != null ) { for ( SingleFieldBuilder < MType , BType , IType > entry : builders ) { if ( entry != null ) { entry . dispose ( ) ; } } builders = null ; } onChanged ( ) ; incrementModCounts ( ) ; }
target:  Removes all of the elements from this list. The list will be empty after this call returns.