void function ( ) { isOn = true ; }
turns speaker on . concode_field_sep int soundVolume concode_elem_sep double price concode_elem_sep boolean isOn concode_elem_sep int batteryConsumption concode_elem_sep String manufacturer concode_field_sep int getSoundVolume concode_elem_sep void lowerVolume concode_elem_sep int getBatteryConsumption concode_elem_sep void disable concode_elem_sep String getManufacturer concode_elem_sep String toString concode_elem_sep double getPrice concode_elem_sep boolean getIsOn concode_elem_sep void increaseVolume