Differences between SignRequest\Api\Model\SignRequest and SignRequest\Api\Model\DocumentSignRequest

[Stapelpanda]

When fetching the list of documents with an error arrises if a signrequest has no subject.

There are some small differences between the two classes which causes this behaviour. Since your code is generated by Swagger, I will not put in a pull request.

Could you change the minimum and maximum length for the fields in DocumentSignRequest model?

For the changes I've made to get it working see: https://github.com/Stapelpanda/signrequest-php-client/tree/fix-documentsignrequest-diff

[michi88]

@cjackson could you have a look at this, please? Thanks for reporting!