woocommerce_addon_installed │ action-hook │ WC 1.0

Usage

add_action( 'woocommerce_addon_installed', 'wp_kama_woocommerce_addon_installed_action', 10, 2 );

/**
 * Function for `woocommerce_addon_installed` action-hook.
 * 
 * @param  $wcpay_plugin_id 
 * @param  $section         
 *
 * @return void
 */
function wp_kama_woocommerce_addon_installed_action( $wcpay_plugin_id, $section ){

	// action...
}

$wcpay_plugin_id

-

$section

-

Where the hook is called

do_action( 'woocommerce_addon_installed', $wcpay_plugin_id, $section );

Where the hook is used in WooCommerce

add_action( 'woocommerce_addon_installed', array( $this, 'track_addon_install' ), 10, 2 );