(self)
return self._adb_available
return if adb cmd is available
            checked in init
return if adb cmd is available
            checked in init
return if adb cmd is available checked in init
def min_required(self):
        """ return if adb cmd is available
            checked in init
        """
        return self._adb_available
def min_required ( self ) : return self . _adb_available