text: """Combinations of DataSource with Controller types for duplex vehicle
  interfaces."""
  from .sources import UsbDataSource, SerialDataSource, NetworkDataSource, \
          BluetoothVehicleInterface
  from .controllers import UsbControllerMixin, SerialControllerMixin, Controller
  
  
  class UsbVehicleInterface(UsbDataSource, UsbControllerMixin):
      """This class is compatibile with an OpenXC vehicle interface vehicle interface
      attached via USB. It supports full duplex reads and writes.
      """
      pass
  
  class SerialVehicleInterface(SerialDataSource, SerialControllerMixin):
      """This class is compatibile with an OpenXC vehicle interface vehicle interface
      connected via a virtual serial port (e.g. FTDI or Bluetooth). It has full
      read support and limited write support (no control commands are supported).
      """
      pass
  
  class NetworkVehicleInterface(NetworkDataSource, Controller):
      """This class is compatibile with an OpenXC vehicle interface vehicle interface
      connected via the network (e.g. Ethernet or Wi-Fi). It has full
      read support and limited write support (no control commands are supported).
      """
      pass
  