/**
	 * List the current user's tracked times.
	 *
	 * @param   int    $page    Page number of results to return (1-based).
	 * @param   int    $limit   Page size of results.
	 * @param   string|null $since   Optional. Only show times updated after the given time (RFC 3339 format).
	 * @param   string|null $before  Optional. Only show times updated before the given time (RFC 3339 format).
	 *
	 * @return  array|null
	 * @since   3.2.0
	 **/
	public function list(
		int $page = 1,
		int $limit = 10,
		?string $since = null,
		?string $before = null
	): ?array
	{
		// Build the request path.
		$path = '/user/times';

		// Build the URL
		$url = $this->uri->get($path);
		$url->setVar('page', $page);
		$url->setVar('limit', $limit);
		
		if ($since !== null) 
		{
			$url->setVar('since', $since);
		}
		
		if ($before !== null) 
		{
			$url->setVar('before', $before);
		}

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

	/**
	 * Get list of all existing stopwatches for the authenticated user.
	 *
	 * @param   int    $page    Page number of results to return (1-based).
	 * @param   int    $limit   Page size of results.
	 *
	 * @return  array|null
	 * @since   3.2.0
	 **/
	public function stopwatches(
		int $page = 1,
		int $limit = 10
	): ?array
	{
		// Build the request path.
		$path = '/user/stopwatches';

		// Build the URL
		$url = $this->uri->get($path);
		$url->setVar('page', $page);
		$url->setVar('limit', $limit);

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