code: func (m *MachinesClient) Get(ctx context.Context, machineID *identity.ID) (*apitypes.MachineSegment, error) {
  	resp := &apitypes.MachineSegment{}
  	err := m.client.RoundTrip(ctx, "GET", "/machines/"+(*machineID).String(), nil, nil, &resp)
  	return resp, err
  }
docs: // Get requests a single machine from the registry