Wrong type hint for some properties

[jdomenechb]

As an example, in class Operation, requestBody property is defined as:

php-openapi/src/spec/Operation.php

Line 23 in 13b9175

* @property RequestBody|Reference $requestBody

However, if the requestBody property is NOT in the contract, getting the property results in null. Therefore, the type hint should be updated to reflect that.

This might happen with other properties in the same or other objects: what I've just posted is an example.

[cebe]

Fixed, thanks for reporting!