Boilerplate of a singleton controller for adding custom fixes into the WooCommerce Calypso Bridge plugin

class-wc-calypso-bridge-my-custom-fix.php

<?php
/**
 * Custom fix controller class.
 *
 * @package WC_Calypso_Bridge/Classes
 * @since   x.x.x
 * @version x.x.x
 */

defined( 'ABSPATH' ) || exit;

if ( class_exists( 'WC_Calypso_Bridge_My_Custom_Fix' ) ) {
	return
}

/**
 * WC_Calypso_Bridge_My_Custom_Fix Class.
 */
class WC_Calypso_Bridge_My_Custom_Fix {

	/**
	 * Class instance.
	 */
	protected static $instance = false;

	/**
	 * Get class instance.
	 */
	final public static function get_instance() {
		if ( ! self::$instance ) {
			self::$instance = new self();
		}

		return self::$instance;
	}

	/**
	 * Constructor.
	 */
	public function __construct() {

		// Plan detection.
		// e.g. runs in business sites only.
		// if ( ! wc_calypso_bridge_is_business_plan() ) {
		//     return;
		// }

		$this->init();
	}

	/**
	 * Initialize hooks.
	 */
	public function init() {
		// Your code here. e.g., add_action( 'init', ... );
	}
}

WC_Calypso_Bridge_My_Custom_Fix::get_instance();