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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 create_scan(self, scan_id, targets, options, vts):
 """ Creates a new scan. @target: Target to scan. @options: Miscellaneous scan options. @return: New scan's ID. """

        if self.scan_exists(scan_id):
            logger.info("Scan %s exists. Resuming scan.", scan_id)

        return self.scan_collection.create_scan(scan_id, targets, options, vts)