Creates a pricing plan.
The createPlan()
function returns a Promise that resolves to a newly-created pricing plan after is has successfully been created.
The passed plan
object must contain a pricing model. A pricing model can be one of the following:
Pricing plans created by this function are available to the site owner in the Pricing Plans section in the Dashboard.
This function requires elevated permissions and runs only on the backend and on dashboard pages.
Information for the plan being created.