Status of Optional

[jmcintyre]

I see the documentation listing optional as currently unsupported, but I was curious if there is any support at all for it. For example, do interfaces that use it not work at all, or would it be possible to retrieve the values without knowing if they were defaulted or passed across?

[jmcintyre]

Looks like the generator gets confused on optional and outputs some invalid code. However, if I change that to output the same thing it would have done without the optional tag, then it appears to work alright. Would there be interest a change to that default behavior? It wouldn't be a complete implementation of optional (no function to check if the value was sent or defaulted), but it would process for those of us that that doesn't matter.

[jmcintyre]

I put a pull request into the underlying generator project that does this: thejinchao/protoc-gen-turbolink#17