public TYPE_1 METHOD_1 ( TYPE_1 VAR_1 ) { <BUG> if ( ( VAR_2 ) == null ) {VAR_2 = new java.util.ArrayList < > ( ) ;}</BUG> VAR_2 . add ( VAR_1 ) ; return this ; }
public TYPE_1 METHOD_1 ( TYPE_1 VAR_1 ) { VAR_2 . add ( VAR_1 ) ; return this ; } 
