Possible issue for: error: Cannot read property 'indexOf' of undefined

On receiving the above error, I went thru the code and found out that:

When created an API by using yo rest:api, it doesn't generate the datatype in annotations for @apiParam. See a sample annotation generated below for products

/**
 * @api {post} /products Create product
 * @apiName CreateProduct
 * @apiGroup Product
 * @apiParam name Product's name.
 * @apiParam description Product's description.
 * @apiParam price Product's price.
 * @apiSuccess {Object} product Product's data.
 * @apiError {Object} 400 Some parameters may contain invalid values.
 * @apiError 404 Product not found.
 */
router.post('/',
  body({ name, description, price }),
  create)

Whereas, the user model generated by yo rest does contain the datatype {String} for @apiParam access_token.

/**
 * @api {get} /users Retrieve users
 * @apiName RetrieveUsers
 * @apiGroup User
 * @apiPermission admin
 * @apiParam {String} access_token User access_token.
 * @apiUse listParams
 * @apiSuccess {Object[]} users List of users.
 * @apiError {Object} 400 Some parameters may contain invalid values.
 * @apiError 401 Admin access only.
 */

I checked the code and there's a small fix required in this line, https://github.com/diegohaz/rest/blob/master/generators/api/templates/index.js#L71

I see the template in this line that could be used
https://github.com/diegohaz/rest/blob/master/generators/app/templates/api/user/index.js#L98

I understand that the user model already has the datatypes defined in annotations because the logic is defined for each param, and the yo rest:api command doesn't accept datatypes from the CLI.
I am suggesting that since the generator already assigns the datatype String to the params we create for the API, so let's assign "String" as the param data type in annotations.