docs: function apiRequest(url, callback) {
      var options = {
        url: url,
        method: 'GET',
  			timeout: config.timeoutMS,
        maxAttempts: 3,
        retryDelay: 2000,  // (default) wait for 2s before trying again
        retryStrategy: request.RetryStrategies.HTTPOrNetworkError // (default) retry on 5xx or network errors
      };
  
      var req = request(options, function(error, response, body) {
        if(typeof callback === 'function') {
          var data;
          if(error) {
            callback.call(self, new Error('Error in server response: ' + JSON.stringify(error)), null);
            return;
          }
          try {
            data = JSON.parse(body);
            if(data.error != false){
              callback.call(self, new Error('API error.'), null);
            } else {
              // All good.
              callback.call(self,null,data.response);
            }
          }
          catch(e) {
            callback.call(self, new Error('Could unknown server response occured.'), null);
            return;
          }
        }
      });
  
      return req;
    }