Whenever in this chapter, or in any city ordinance, a license or permit is required for the maintenance, operation, or conduct of any business or establishment, or for doing business or engaging in any activity or occupation, any person shall be subject to the requirement if by himself, or through an agent, employee, or partner, he is held forth as being engaged in the business, activity, or occupation, or if he solicits patronage therefor, actively or passively; or if he performs or attempts to perform any part of such business, activity, or occupation in the city.
(`79 Code, § 110.002) Penalty, see § 10.99