Allow custom ToStringStyle to be absent on classpath when generating java files

[rpost]

As in title: I'd like to have possibility to use commons-lang plugin with custom ToStringStyle. Problem is that my custom implementation isn't available yet while generating sources - it's to be compiled together with generated sources. Are you open to PR with such a change?

[petr-bartusek]

Hi guys,
we have in our project same issue, We are not able to use custom ToStringStyle implementation.
Can someone provide us a sample code or more info where tu put custom ToStringStyle java to avoid BadCommandLineException?
Thanks
Petr