protocol HubspotService {
    func fetch() -> [String]
}

class TestingHubspotService: HubspotService {
    static let shared = TestingHubspotService()
    private init() {}

    func fetch() -> [String] {
        // Mock data
        return ["Testing", "One"]
    }
}


class ProductionHubspotService: HubspotService {
    static let shared = ProductionHubspotService()
    private init() {}

    func fetch() -> [String] {
        // TODO: return results from network
        fatalError()
    }
}

class ContactsViewController: UIViewController {

    // MARK: - Stored Properties

    lazy var hubspotService: HubspotService = ProductionHubspotService.shared

    func reload() {
        let results = hubspotService.fetch()
        print(results)
    }
}