(Program
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    (Identifier))
  (Function
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    (Args)
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        (Other "identifier_list"
        { (Identifier)
        ->(Identifier) })
        (Identifier)))
    (Other "var_declaration"
      (VarAssignment
        (Other "identifier_list"
        { (Identifier)
        ->(Identifier) }
        { (Identifier)
        ->(Identifier) })
        (Identifier)))))