Method: Record the start date of the access plan and schedule expiration if expiration is required in the future

Method: Update the status of an order

Method: Date field setter for date fields that require things to be updated when their value changes

Method: Record a transaction for the order

Method: Handles scheduling recurring payment retries when the gateway supports them

Method: Schedules the next payment due on a recurring order

Method: Schedule access expiration

Method: Determine if the order is recurring or singular

Method: Determine if the order is a legacy order migrated from 2.x

Method: Initializes a new order with user, plan, gateway, and coupon metadata.