anchor.diff:             ]
            }
          ).
  +
   -define( SIMPLE_OBJECT2
          , { array
            , [ {"0", {struct, [{"type", "known"}]}}
  
positive.code:            ]
           }
         ).
  -define( OBJECT_3
         , { array
           , [ { "0"
  
negative.code:            ]
           }
         ).
  
  -define( UNEXPECTED_OBJECT
         , {?MATCH_ANY, ?UNEXPECTED}
         ).
  