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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 browser_attach_timeout(self, value):
 """ Sets the options Browser Attach Timeout :Args: - value: Timeout in milliseconds """

        if not isinstance(value, int):
            raise ValueError('Browser Attach Timeout must be an integer.')
        self._options[self.BROWSER_ATTACH_TIMEOUT] = value