WC_Payment_Gateways::filter_valid_gateway_class()
Method: Callback for array filter. Returns true if gateway is of correct type.
Source: includes/class-wc-payment-gateways.php:170
Method: Callback for array filter. Returns true if gateway is of correct type.
Source: includes/class-wc-payment-gateways.php:170
Method: Set the current, active gateway.
Source: includes/class-wc-payment-gateways.php:179
Method: Save options in admin.
Source: includes/class-wc-payment-gateways.php:208