Creates a pricing plan.
The createPlan()
function returns a Promise that resolves to a newly-created pricing plan after it has successfully been created.
The passed PlanInfo
object must contain a pricing model. A pricing model is one of the following:
Pricing plans created by this function are available to the site owner in the Pricing Plans section in the Dashboard.
Only users with "Manage Pricing Plans" permissions can create plans.
The information for the plan being created.