/// <summary>
        /// Retrieves statements using the "more" property attached to a previous statement response.
        ///
        /// This function will remove the first parts of that "more" property to fit your LRS endpoint.
        /// </summary>
        /// <param name="moreIrl"></param>
        /// <param name="callback"></param>
        public static void GetMoreStatements(string moreIrl, Action <StatementResult, UnityWebRequest> callback)
        {
            // Make sure it's formatted correctly
            if (moreIrl.Contains("/more/"))
            {
                // Find out where it is
                int    index = moreIrl.IndexOf("/more/");
                string more  = moreIrl.Substring(index, moreIrl.Length - index);

                // Build the fully qualified URL
                string url = XAPIMessenger.Config.Endpoint + more;

                // Make the request
                XAPIMessenger.GetStatements(url, callback);
            }
            else
            {
                throw new ArgumentException("XAPIWrapper.GetMoreStatements: moreIrl argument must contain \"/more/\"");
            }
        }
        /// <summary>
        /// Retrieves statements according to the StatementQuery values.
        ///
        /// The StatementResult object in the callback may contain a `MoreIRL` value.  If that is the case,
        /// then more statements matching your query can be returned using that endpoints with your LRS.
        /// </summary>
        /// <param name="result"></param>
        /// <param name="callback"></param>
        public static void GetStatements(StatementQuery query, Action <StatementResult, UnityWebRequest> callback)
        {
            string url = XAPIMessenger.Config.StatementEndpoint + query.BuildQueryString();

            XAPIMessenger.GetStatements(url, callback);
        }
 /// <summary>
 /// Retrieves statements from a fully-qualified URL pointing to the configured LRS.
 ///
 /// This is the most granular version of the call and should only be made by the wrapper itself.
 /// </summary>
 /// <param name="url"></param>
 /// <param name="callback"></param>
 public static void GetStatements(string url, Action <StatementResult, UnityWebRequest> callback)
 {
     // Make sure we have a messenger
     XAPIWrapper.CheckMessenger();
     XAPIMessenger.GetStatements(url, callback);
 }