<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def UninstallDriver(bundle_name):
 """Calls into the IOKit to unload a kext by its name. Args: bundle_name: The bundle identifier of the kernel extension as defined in Info.plist field CFBundleIdentifier. Returns: The error code from the library call. objc.OS_SUCCESS if successfull. """

  km = objc.KextManager()

  cf_bundle_name = km.PyStringToCFString(bundle_name)
  status = km.iokit.KextManagerUnloadKextWithIdentifier(cf_bundle_name)
  km.dll.CFRelease(cf_bundle_name)
  return status