def LoadClientConfig(self, backend=None):
    if backend is None:
      backend = self.settings.get('client_config_backend')
      if backend is None:
        raise InvalidConfigError('Please specify client config backend')
    if backend == 'file':
      self.LoadClientConfigFile()
    elif backend == 'settings':
      self.LoadClientConfigSettings()
    else:
      raise InvalidConfigError('Unknown client_config_backend')
Allocate free floating IP from specified pool and return the address.
dataset/ETHPy150Open googledrive/PyDrive/pydrive/auth.py/GoogleAuth.LoadClientConfig--crossover with--dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/db/api.py/floating_ip_allocate_address