fix the ToString() issue and add new type of ids to the collection
fix the ToString() issue and add new type of ids to the collection

ctripcorp/zeus,sdgdsffdsfff/zeus,sdgdsffdsfff/zeus,sdgdsffdsfff/zeus,sdgdsffdsfff/zeus,ctripcorp/zeus,ctripcorp/zeus,ctripcorp/zeus,sdgdsffdsfff/zeus