code: public String getMessage() {
  		if (command == 8) {
  			String prefix = "APNS: [" + identifier + "] "; //APNS ERROR FOR MESSAGE ID #" + identifier + ": ";
  			if (status == 0) return prefix + "No errors encountered";
  			if (status == 1) return prefix + "Processing error";
  			if (status == 2) return prefix + "Missing device token";
  			if (status == 3) return prefix + "Missing topic";
  			if (status == 4) return prefix + "Missing payload";
  			if (status == 5) return prefix + "Invalid token size";
  			if (status == 6) return prefix + "Invalid topic size";
  			if (status == 7) return prefix + "Invalid payload size";
  			if (status == 8) return prefix + "Invalid token";
  			if (status == 255) return prefix + "None (unknown)";
  			return prefix + "Undocumented status code: " + status;
  		}
  		return "APNS: Undocumented response command: " + command;
  	}
docs: Returns a humand-friendly error message, as documented by Apple.
  
  @return a humand-friendly error message