Java time properties

Hello! On one project I needed to format java time properties. To do this, I use the @JsonFormat annotation of the Jackson library. I have forked the swagger-core library and added formatting for the "example" and a pattern for the "pattern". And I would like to know if it is possible to make changes to the main branch of the swagger-core project. And make a pull request?

Best regards Dmitriy Kulabuhov!