WC_Admin_Report::check_current_range_nonce()
Method: Check nonce for current range.
Source: includes/admin/reports/class-wc-admin-report.php:750
WC_Order::has_billing_address()
Method: Returns true if the order has a billing address.
Source: includes/class-wc-order.php:952
WC_Order::has_shipping_address()
Method: Returns true if the order has a shipping address.
Source: includes/class-wc-order.php:962
learndash_is_protected_meta()
Function: Prevents Custom Fields meta box from showing/saving LD keys.
Source: includes/ld-misc-functions.php:1852