func syncPurchases (completion: ((CustomerInfo ?, Error?) -> Void)?) This method will post all purchases associated with the current App Store account to RevenueCat and become associated with the current
appUserID .func restorePurchases () async throws -> CustomerInfo This method will post all purchases associated with the current App Store account to RevenueCat and become associated with the current
appUserID . If the receipt is being used by an existing user, the current appUserID will be aliased together with the appUserID of the existing user. Going forward, either appUserID will be able to reference the same user.func restorePurchases (completion: ((CustomerInfo ?, Error?) -> Void)?) This method will post all purchases associated with the current App Store account to RevenueCat and become associated with the current
appUserID . If the receipt is being used by an existing user, the current appUserID will be aliased together with the appUserID of the existing user. Going forward, either appUserID will be able to reference the same user.func showManageSubscriptions () async throws Use this function to open the manage subscriptions modal.
func showManageSubscriptions (completion: (Error?) -> Void) Use this function to open the manage subscriptions page.