querydsl-collections and groupBy -

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I'm trying to play with querydsl-archive, but failing to write simple group expression is my attempt here: 

  Imported Fixed Com. Messe.Quere.Leas.Alias $; Import static com.mysema.query.alias.Alias.alias; Static com.mysema.query.collections.CollQueryFactory.from import; Import static java.util.Arrays.asList; Import java.util.list; Import com.mysema.query.Tuple; Public Square QuerydslCollectionsGroupByTest {Public Stable Zero Main (string [] Args) {List & lt; Foo & gt; New Fu ("A1", 1), New Foo ("A1", 2), New Foo ("A1", 3), New Foo ("A2", 4), New Foo ("A2 ", 5), New Foo (" A2 ", 6)); Foo F = Surname (Foo Class, "Foo"); & Lt; Tuple & gt; Results = from ($ (f), foos). Group ($ (f.getA ()) .list ($ (f.getA ()), $ (f.getSum ()). Sum ()); Println (result);} Public static class Foo {Private string A Public FU (public) Fu (public) FU (string A, integer amount) {this.a = a; this.sum = sum;} public string getA () {return;} public integer getSum () {return Zodiac;} Public Zero Satusum (integer sum) {this.sum = sum;} Public zero set A (string A) {this.a = a;}}}   
 But when I I try to run it:  
  In thread "main" com.mysema.codegen.CodegenException exception: Public category Q_838101820_201273267_01405199074_997653153 {public static com.mysema.query.Tuple eval (com.sopovs.moradanen's compilation.zkoss.QuerydslCollectionsGroupByTest.Foo foo, com.mysema.query. types.QTuple a1) {return (com.mysema.query.Tuple) (a1.newInstance (foo.getA (), sum (foo.getSum ())));}} plow. /Q_838101820_201273267_01405199074_997653153.java:4: Error: Can not get symbol return (com.mysema.query.Tuple) (a1.newInstance (foo.getA (), sum (foo.getSum ()))); } ^ Symbol: method sum (int) Location category on Q_838101820_201273267_01405199074_997653153 com.mysema.codegen 1 error com.mysema.codegen.JDKEvaluatorFactory.compile (JDKEvaluatorFactory.java:74). Com.mysema.codegen.AbstractEvaluatorFactory.createEvaluator com.mysema.query.collections.DefaultEvaluatorFactory.create (DefaultEvaluatorFactory.java:125) com.mysema.query.collections.DefaultQueryEngine.project at AbreckAqualator Factory.createEvaluator (AbstractEvaluatorFactory.java:128) on (AbstractEvaluatorFactory.java:94) (DefaultQueryEngine. Java: 234) com.mysema.query.collections.DefaultQueryEngine.list (DefaultQueryEngine.java on com.mysema.query.collections.DefaultQueryEngine.evaluateSingleSource (DefaultQueryEngine.java:192) on 91) .AbstractCollQuery.list (AbstractCollQuery.java:202) on com.mysema.query.collections com.mysema.query.collections.AbstractCollQuery.list (AbstractCollQuery.java:195) com.sopovs.moradanen.zkoss.QuerydslCollectionsGroupByTest .main on (QuerydslCollectionsGroup ByTest.java7)   
 Is this a bug?   
 
 
 The total estimate is not supported yet Kviressel Collection

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