(Program
  (Module
    (Identifier))
  (Function
    (Identifier)
    (Args)
    (VarDecl
      (Other "expression_list"
      { (Identifier)
      ->(Identifier) }
      { (Identifier)
      ->(Identifier) })
      (Other "expression_list"
      { (NumberLiteral)
      ->(NumberLiteral) }
      { (NumberLiteral)
      ->(NumberLiteral) }))))