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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 ListClients(self, request, timeout=None):
 """Provides basic information about Fleetspeak clients. Args: request: fleetspeak.admin.ListClientsRequest timeout: How many seconds to try for. Returns: fleetspeak.admin.ListClientsResponse """

    return self._RetryLoop(
        lambda t: self._stub.ListClients(request, timeout=t))