new Rule("A","A","A","T1")),
new Tree23Map<String,AssocType>(),
new Tree23Map<String,Integer>(),
new Tree23Map<Rule,Integer>()) ;
FirstStrategy ff = new FirstImpl(g) ;
Set<String> f = ff.first("T'");
assertEquals(f,new HashSet<String>(Arrays.asList("T1","T2"))) ;
}
/**
* @throws StrandedSymbol
* @throws InvalidStartRule