public TYPE_1 METHOD_1 ( TYPE_2 VAR_1 ) { this . VAR_2 = new java.util.ArrayList < > ( ) ; this . VAR_2 . add ( VAR_1 ) ; return this ; } 

public TYPE_1 METHOD_1 ( TYPE_2 VAR_1 ) { if ( ( this . VAR_2 ) == null ) this . VAR_2 = new java.util.ArrayList < > ( ) ; this . VAR_2 . add ( VAR_1 ) ; return this ; } 
