tree.setType(definitions.UNIT_TYPE);
tree.setType(Type.NoType);
    public DefDef DefDef(Symbol sym, Tree body) {        DefDef tree = make.DefDef(            sym.pos,            sym,            mkTypeParamsOf(sym),            mkParamsOf(sym),            TypeTerm(sym.pos, sym.nextType().resultType()),            body);        tree.setType(definitions.UNIT_TYPE);        return tree;    }