Additional method for Module which is called before pipeline.drain

Summary

An additional method for Module, which is called by the Pipeline after all modules have been configured but before starting to drain and call process would allow to access all services and do some preparation.

What is the current workaround to achieve the same functionality?

One can use configure(), but there, only services from the preceding modules are available. One can rearrange them but it's sometimes not possible. Another workaround is to do the procedure in the first call of process.