parameters: (self, pin_type, pin_setting)
docstring: pin a subvolume
  
          :param pin_type: type of pin
          :param pin_setting: setting for pin
          :return: None
docstring_summary: pin a subvolume
docstring_tokens: pin a subvolume
function: def pin(self, pin_type, pin_setting):
          """
          pin a subvolume
  
          :param pin_type: type of pin
          :param pin_setting: setting for pin
          :return: None
          """
          raise VolumeException(-errno.ENOTSUP, "operation not supported.")
function_tokens: def pin ( self , pin_type , pin_setting ) : raise VolumeException ( - errno . ENOTSUP , "operation not supported." )