add a cute API to propagate scoped typed objects with the PC

[gavinking]

WDYT folks?

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[beikov]

Fine by me, but it should probably be @since 7.3 rather than @since 4.0

[marko-bekhta]

hmm, this seems similar to:

• HHH-19849 Add an SPI that allows attaching session-scoped "extensions" to the session/statelesssession implementors #11093

[sebersole]

hmm, this seems similar to:

• HHH-19849 Add an SPI that allows attaching session-scoped "extensions" to the session/statelesssession implementors #11093

Yep. Only difference is that yours is an SPI and this is an API.

This (API) is somwething we've always been hesitant to do. Why now @gavinking ?

[gavinking]

This (API) is somwething we've always been hesitant to do. Why now @gavinking ?

I dunno 🤷‍♂️ I'm still not sold on it.