public function register_routes( $routes ) {

		# GET/POST /coupons
		$routes[ $this->base ] = array(
			array( array( $this, 'get_coupons' ),     WC_API_Server::READABLE ),
			array( array( $this, 'create_coupon' ),   WC_API_Server::CREATABLE | WC_API_Server::ACCEPT_DATA ),
		);

		# GET /coupons/count
		$routes[ $this->base . '/count' ] = array(
			array( array( $this, 'get_coupons_count' ), WC_API_Server::READABLE ),
		);

		# GET/PUT/DELETE /coupons/<id>
		$routes[ $this->base . '/(?P<id>\d+)' ] = array(
			array( array( $this, 'get_coupon' ),    WC_API_Server::READABLE ),
			array( array( $this, 'edit_coupon' ),   WC_API_SERVER::EDITABLE | WC_API_SERVER::ACCEPT_DATA ),
			array( array( $this, 'delete_coupon' ), WC_API_SERVER::DELETABLE ),
		);

		# GET /coupons/code/<code>, note that coupon codes can contain spaces, dashes and underscores
		$routes[ $this->base . '/code/(?P<code>\w[\w\s\-]*)' ] = array(
			array( array( $this, 'get_coupon_by_code' ), WC_API_Server::READABLE ),
		);

		# POST|PUT /coupons/bulk
		$routes[ $this->base . '/bulk' ] = array(
			array( array( $this, 'bulk' ), WC_API_Server::EDITABLE | WC_API_Server::ACCEPT_DATA ),
		);

		return $routes;
	}