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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def read(self, ova_path):
        "Read and interpret ova file into this Appliance object."
        p = super(IAppliance, self).read(ova_path)
        p.wait_for_completion()
        self.interpret()
        warnings = self.get_warnings()
        if warnings:
            warning = Warning("\n".join(warnings))
            warning.warnings = warnings
            raise warning