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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 _exportFile(self, otherCls, jobStoreFileID, url):
 """ Refer to exportFile docstring for information about this method. :param AbstractJobStore otherCls: The concrete subclass of AbstractJobStore that supports exporting to the given URL. Note that the type annotation here is not completely accurate. This is not an instance, it's a class, but there is no way to reflect that in :pep:`484` type hints. :param str jobStoreFileID: The id of the file that will be exported. :param urlparse.ParseResult url: The parsed URL of the file to export to. """

        with self.readFileStream(jobStoreFileID) as readable:
            otherCls._writeToUrl(readable, url)