It seems common to need to do things with key values--see #7308 for some examples.

Some things to consider:

• Get the key values of a tracked entry
• Lookup an entity in the state manager using key values (the state manager part of Find) Lookup tracked entities by primary key, alternate key, or foreign key #29685
• Get the FK values of a tracked entity
• Build query clauses that find given key values or compare principal and foreign key values (e.g. Explicit loading for list of entries: context.Entries(...)...Load() #7350)
• Get or set concurrency token without knowing the properties