code: function hello(req, res) {
    // variables defined in the Swagger document can be referenced using req.swagger.params.{parameter_name}
    var name = req.swagger.params.name.value || 'stranger';
    var hello = util.format('Hello, %s!', name);
  
    // this sends back a JSON response which is a single string
    res.json(hello);
  }
docs: /*
  Functions in a127 controllers used for operations should take two parameters:
  
  Param 1: a handle to the request object
  Param 2: a handle to the response object