code: private void attachMeta(final JSONObject o, final Context context) {
          // Memory consumption
          try {
              o.put("mc", Utils.getMemoryConsumption());
          } catch (Throwable t) {
              // Ignore
          }
  
          // Attach the network type
          try {
              o.put("nt", Utils.getCurrentNetworkType(context));
          } catch (Throwable t) {
              // Ignore
          }
      }
docs: Attaches meta info about the current state of the device to an event.
  Typically, this meta is added only to the ping event.