Add support for Subscription Schedule APIs

[remi-stripe]

Add support for Subscription Schedule APIs

• Add Subscription Schedule
• Add Subscription Schedule Revisions
• Add invoice_settings on the Customer

cc @stripe/api-libraries

[remi-stripe]

This is now ready to be reviewed. r? @mickjermsurawong-stripe

[mickjermsurawong-stripe]

Should be cancel a subscription schedule?

[remi-stripe]

damn copy/paste and replace. Fixed all 8 of them.

[mickjermsurawong-stripe]

Hmm.. actually no other resource returns this collection, so we can never get an instance of this collection to make the API request (with the existing url)..

[mickjermsurawong-stripe]

I think we can go with the followings..
In SubscriptionSchedule.java we have
public SubscriptionScheduleRevisionCollection revisions()
Then, we remove the list method from the SubscriptionScheduleRevisionCollection.java..
I fixed my client metadata and the generated outcome looks like this..

stripe-java/src/main/java/com/stripe/model/SubscriptionSchedule.java

Lines 338 to 356 in abaada5

	public SubscriptionScheduleRevisionCollection revisions() throws StripeException {
	return revisions((Map<String, Object>) null, (RequestOptions) null);
	}
	/** Retrieves the list of subscription schedule revisions for a subscription schedule. */
	public SubscriptionScheduleRevisionCollection revisions(Map<String, Object> params)
	throws StripeException {
	return revisions(params, (RequestOptions) null);
	}
	/** Retrieves the list of subscription schedule revisions for a subscription schedule. */
	public SubscriptionScheduleRevisionCollection revisions(
	Map<String, Object> params, RequestOptions options) throws StripeException {
	String url =
	String.format(
	"%s%s",
	Stripe.getApiBase(),
	String.format("/v1/subscription_schedules/%s/revisions", this.getId()));
	return requestCollection(url, params, SubscriptionScheduleRevisionCollection.class, options);

I believe this is similar to account/person relationship

[remi-stripe]

@mickjermsurawong-stripe Nice catch, fixed!

[mickjermsurawong-stripe]

ptal @remi-stripe just on the revision collection because it is currently not returned anywhere..

[mickjermsurawong-stripe]

thank @remi-stripe
LGTM