/**
	 * Get notification thread by ID.
	 *
	 * @param   int   $id  The notification thread ID.
	 *
	 * @return  object|null
	 * @since   3.2.0
	 **/
	public function get(int $id): ?object
	{
		// Build the request path.
		$path = "/notifications/threads/{$id}";

		// Get the URI with the path.
		$uri = $this->uri->get($path);

		// Send the get request.
		return $this->response->get(
			$this->http->get($uri)
		);
	}

	/**
	 * Mark notification threads as read, pinned, or unread by ID.
	 *
	 * @param   int           $id          The notification thread ID.
	 * @param   string|null   $lastReadAt  Last point that notifications were checked (optional).
	 * @param   bool|null     $all         Mark all notifications on this repo (optional).
	 * @param   array|null    $statusTypes Mark notifications with the provided status types (optional).
	 * @param   string|null   $toStatus    Status to mark notifications as (optional).
	 *
	 * @return  object|null
	 * @since   3.2.0
	 **/
	public function mark(
		int $id,
		?string $lastReadAt = null,
		?bool $all = null,
		?array $statusTypes = null,
		?string $toStatus = null
	): ?object
	{
		// Build the request path.
		$path = "/notifications/threads/{$id}";

		// Configure the URI with query parameters.
		$uri = $this->uri->get($path);
		if ($lastReadAt !== null)
		{
			$uri->setVar('last_read_at', $lastReadAt);
		}
		if ($all !== null)
		{
			$uri->setVar('all', $all);
		}
		if ($statusTypes !== null)
		{
			$uri->setVar('status-types', implode(',', $statusTypes));
		}
		if ($toStatus !== null)
		{
			$uri->setVar('to-status', $toStatus);
		}

		// Send the put request.
		return $this->response->get(
			$this->http->put($uri, ''), 205
		);
	}