def METHOD_NAME(self, signal_exchange_api_cls: str) -> str:
    api_classes_with_this_exchange = [
        api
        for api in ToggleableSignalExchangeAPIConfig.get_all()
        if api.signal_exchange_api_class == signal_exchange_api_cls
    ]
    assert (
        api_classes_with_this_exchange
    ), f"No SignalExhchange configured for {signal_exchange_api_cls}, but collab config was found."
    return self.secrets.get_secret(
        api_classes_with_this_exchange[0].get_credential_name()
    )