def METHOD_NAME(self):
    """Error when source file cannot be found"""
    try:
        ans = pyomo.opt.convert_problem(
            (currdir + "unknown.nl",), None, [pyomo.opt.ProblemFormat.cpxlp]
        )
        self.fail("Expected pyomo.opt.ConverterError exception")
    except ApplicationError:
        if pyomo.common.Executable("pico_convert"):
            self.fail(
                "Expected ApplicationError because pico_convert is not available"
            )
        return
    except pyomo.opt.ConverterError:
        pass