(Program
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    (Identifier))
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    (Identifier)
    ([])
    ([]))
  (Method
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    (Identifier)
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  ->(Identifier) }
    ([])
    (Empty))
  (Method
    (
      (Identifier))
    (
      (Identifier)
    { (Identifier)
    ->(Identifier) })
    (Identifier)
    (
      (Identifier)
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    ([]))
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    (
      (Identifier))
    (
      (Identifier)
      (Pointer
        (Identifier)))
  { (Identifier)
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    ([])
    (Return
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        (MemberAccess
          (Identifier)
          (Identifier))
        (Plus
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          {+(MemberAccess
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        (Empty))))
  (Method
    ([])
    (
    { (Identifier)
    ->(Identifier) }
      (Pointer
        (Identifier)))
    (Identifier)
    (
      (Identifier)
    { (Identifier)
    ->(Identifier) })
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          (Identifier)
          (Identifier))
        (Times
          (MemberAccess
            (Identifier)
            (Identifier))
          (Identifier)))
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          (Identifier)
          (Identifier))
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            (Identifier)
            (Identifier))
          (Identifier)))))
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    (
      (Identifier))
    (
      (Identifier)
      (Pointer
        (Identifier)))
    (Identifier)
    (
    { (Identifier)
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    { (Identifier)
    ->(Identifier) }
      (Identifier))
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