I have a v2 document with a basePath of /nitest, no host, and no schemes. The v2 converter prepends two forward slashes to it, returning a Server URL of ///nitest, which is incorrect - i would expect it to be unchanged.
This prepend occurs in SwaggerConverter.java, line 424.
With a bit of guidance, I can send a PR to fix it. It seems to me that there needs to be an extra case in this method for basePaths which begin with a / when no schemes are available.
If this is the correct approach, or if we should take a different route, let me know - I can post a PR either way.