public boolean METHOD_1 ( TYPE_1 VAR_1 ) { if ( this . VAR_2 . contains ( VAR_1 ) ) return this . METHOD_2 ( ) . add ( VAR_1 ) ; return false ; } 

public boolean METHOD_1 ( TYPE_1 VAR_1 ) { if ( VAR_1 != null ) return this . METHOD_2 ( ) . add ( VAR_1 ) ; return false ; } 
