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(.module:
  [library
   [lux #*
    [abstract
     [equivalence (#+ Equivalence)]]
    [control
     ["." try]]
    [data
     [format
      [binary (#+ Writer)]]]
    [type
     abstract]]]
  ["." /// #_
   [encoding
    ["#." unsigned (#+ U1) ("u1//." equivalence)]]])

(abstract: .public Tag
  {}
  
  U1

  (implementation: .public equivalence
    (Equivalence Tag)
    (def: (= reference sample)
      (u1//= (:representation reference)
             (:representation sample))))

  (template [<code> <name>]
    [(def: .public <name>
       Tag
       (|> <code> ///unsigned.u1 try.assumed :abstraction))]

    [01 utf8]
    [03 integer]
    [04 float]
    [05 long]
    [06 double]
    [07 class]
    [08 string]
    [09 field]
    [10 method]
    [11 interface_method]
    [12 name_and_type]
    [15 method_handle]
    [16 method_type]
    [18 invoke_dynamic]
    )

  (def: .public writer
    (Writer Tag)
    (|>> :representation ///unsigned.writer/1))
  )