{
    filter_role: "[?roles[?@=='dolor']] | length(@)"
    filter_active: "[?isActive] | length(@)"
    filter_age: "[?age<`35`] | length(@)"
    filter_registered: "[?match(&'^201\\d', registered)]",
    filter_valid_email: "[?valid_email(email)] | length(@)",
    filter_junk_email: "[?!valid_email(email)][email, _id]",
}