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_type: ExprLet
attrs:
  or:
    _type: ExprLiteral
    value: 1
    valueType: Int
body:
  _type: ExprList
  elems:
    - _type: ExprCall
      args:
        - _type: ExprVar
          value: or
      fun:
        _type: ExprLambda
        arg: x
        body:
          _type: ExprVar
          value: x