message: made it build
diff: @@ -995,7 +995,7 @@ describe("column collection", () => {
  if (false)
  itAsync("works ok with filter", async () => {
  let c = ctx.for(newCategories);
  - var cc = new ColumnCollection(() => c, () => false, new FilterHelper(() => { }, c), () => true);
  + var cc = new ColumnCollection(() => c, () => false, new FilterHelper(() => { }, c), () => true,()=>undefined);
  await cc.add(c.defs.columns.id);
  cc.filterHelper.filterColumn(cc.items[0].column, false, false);
  expect(cc.filterHelper.isFiltered(cc.items[0].column)).toBe(true);
  