NullWrappedCollection schema generation support

[jack-tomlinson]

Hello,

We use protobuf-net for our gRPC API and have encountered an issue where an exception is thrown during schema generation when we have contracts decorated with the NullWrappedCollection attribute. We see the same error when we try to hit the reflection service whenever we're using postman/grpcurl.

We need to be able to support contracts which contain collections of nullable primitives.

The exception mentions to poke Marc with a big stick, I don't really have a stick at hand but I do have a github issue!

Are there any plans to support this any time soon?

Thanks!

[mgravell]

Consider me stick-poked.