public function create_attendee( $ticket, $attendee_data ) {
		// Get the ticket object from the ID.
		if ( is_numeric( $ticket ) ) {
			$ticket = $this->get_ticket( 0, (int) $ticket );
		}

		// If the ticket is not valid, stop creating the attendee.
		if ( ! $ticket instanceof \Tribe__Tickets__Ticket_Object ) {
			return false;
		}

		$extra              = [];
		$extra['attendees'] = [
			1 => [
				'meta' => Arr::get( $attendee_data, 'attendee_meta', [] )
			]
		];
		$extra['optout']    = ! Arr::get( $attendee_data, 'send_ticket_email', true );
		$extra['iac']       = false;

		// The Manual Order takes the same format as the cart items.
		$items = [
			$ticket->ID => [
				'ticket_id' => $ticket->ID,
				'quantity'  => 1,
				'extra'     => $extra,
			]
		];

		$purchaser = [
			'full_name' => $attendee_data['full_name'],
			'email'     => $attendee_data['email'],

			// By default user ID is zero here.
			'user_id'   => 0,
		];

		$order = tribe( Gateways\Manual\Order::class )->create( $items, $purchaser );

		/**
		 * For now we need to make sure we move to pending before completed.
		 *
		 * @todo @backend when an order is moved into completed they need to update to pending first.
		 *       likely we should have this be developed by implementing a dependent status.
		 */
		$updated = tribe( Order::class )->modify_status( $order->ID, 'pending' );
		if ( is_wp_error( $updated ) ) {
			return $updated;
		}

		$updated = tribe( Order::class )->modify_status( $order->ID, 'completed' );
		if ( is_wp_error( $updated ) ) {
			return $updated;
		}

		$attendee = tec_tc_attendees()->by( 'order_id', $order->ID )->first();

		return $attendee;
	}