public static IReactiveTable CreateJoinedReactiveTable(out IWritableReactiveTable table1, out IWritableReactiveTable table2) { table1 = CreateReactiveTable(); table2 = CreateReactiveTable2(); return(table1.Join(table2, new Join <int>(table1, TestTableColumns.IdColumn, table2, TestTableColumns.OtherIdColumn2))); }