Stripe sync

Is there any way to "import" all daya from Strip to the Cashier ?

I've seen there's sync method to update Stripe customer details from your customer billing details ($customer->syncStripeCustomerDetails();)

But this works for customer/subscriptions you have created with Cashier installed.

I'm implementing Cashier now but I've been working with Stripe for a long time ... and I wonder if there's any way to:

• first, manually, add some stripe_customer_id in somewhere
• second, I guess, to create (manually too) the subscription_items
• then run some method to bring from Stripe all subscription and subscription table is populated automatically ;-)