identity-from

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identity-from

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    - Classes
      - class identity
        
        Instance variables
        
        identity-from
        
        identity-to

identity <-> from: selector1=name

Attribute at the specified side of the constraint object. For normal bi-directional relations, both constrained objects should define both send- and get-behaviour with the specified name.

If a constraint object is used as a propagator (see‘constraint identity->initialise’), get-behaviour on one side and send-behaviour on the other suffices.