Extend Restricted Regexp Package Patterns syntax for nested classes

[mariha]

It would be nice to be able to do something like -XepOpt:NullAway:ExcludedClasses=com.myorg.[a-zA-Z0-9.]*.Builder where the pattern matches a package and outer class name and Builder is a nested class name.

Nothing very urgent though.

[msridhar]

Thanks for the suggestion! We'll keep this in mind. We're going to re-think our suppressions story around inner classes in the near future