call method
Implementation
void call(Request req, Response res, next) async {
/// convert the incoming request body
final _reqBody = await HttpBodyHandler.processRequest(req.ioRequest);
/// it will be Map<String,dynamic>
req.body = _reqBody.body;
/// might be json or form
req.bodyType = _reqBody.type;
/// call the next guard or handler
await next();
}