Great post, very concise and clear.
I’m a few years late to the party and I had to make a few tweaks to get this to work. Just posting it here in case it might help someone else.
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In application.properties I had to add the mongodb embedded version
spring.mongodb.embedded.version=2.6.10 -
When selecting the Implicit (hybrid) as a grant type option I had to select ‘Allow access token’ underneath it. Selecting ‘Allow ID token’ gave me an error.