Modern Site Classification - enabling and setting - story so far

there have been a lot of questions which touch on this and I have spent some time testing and exploring this setting with a view to using it in extensions later.

The story so far

Enabling - currently a powershell op - see https://www.youtube.com/watch?v=E-8Z2ggHcS0

               - will be supported in PnP Core v.soon - see SIG 2nd Nov video https://www.youtube.com/watch?v=HNYBaMMTC-Y

              - retrieving available value list will also be included in PnP Core

Setting

     For Comms Sites - available on  PnPsite object in powershell or Microsoft.SharePoint.Client.Site object in CSOM. works fine

Site spsite = ctx.Site;

ctx.Load(spsite, s => s.Classification);

ctx.ExecuteQueryRetry();

spsite.Classification = "Test";

ctx.ExecuteQueryRetry();

For Modern Team Sites - value is stored on both site and backing group. Group value overrides changes to site value so normal edit gets overwritten. Graph request is needed to set group at same time as site change is made.

PnP Core is being extended to encapsulate this process for all site types and make setting transparent with a new method off the Site object.

see SIG 2nd Nov video - https://www.youtube.com/watch?v=HNYBaMMTC-Y

If anyone else can add or update to this summary that would be great as I may have missed something.