WordPress at a glance
filter is not described

woocommerce_payment_gateway_add_payment_method_delay filter-hook . WC 1.0

Test rate limit.

Usage

add_filter( 'woocommerce_payment_gateway_add_payment_method_delay', 'filter_function_name_1364' );
function filter_function_name_1364( $20 ){
	// filter...

	return $20;
}
$20
-

Where the hook is called

WC_Form_Handler::add_payment_method_action()
woocommerce_payment_gateway_add_payment_method_delay
woocommerce/includes/class-wc-form-handler.php 487
$delay           = (int) apply_filters( 'woocommerce_payment_gateway_add_payment_method_delay', 20 );

Where in WP core the hook is used WooCommerce

Usage not found.