-- | The instance's operating system, which must be set to one of the following.
--
-- Standard operating systems: An Amazon Linux version such as 'Amazon Linux2014.09', 'Ubuntu 12.04 LTS', or 'Ubuntu 14.04 LTS'. Custom AMIs: 'Custom'   The
-- default option is the current Amazon Linux version, such as 'Amazon Linux2014.09'. If you set this parameter to 'Custom', you must use the 'CreateInstance'
-- action's AmiId parameter to specify the custom AMI that you want to use. For
-- more information on the standard operating systems, see <http://docs.aws.amazon.com/opsworks/latest/userguide/workinginstances-os.html Operating Systems>For
-- more information on how to use custom AMIs with OpsWorks, see <http://docs.aws.amazon.com/opsworks/latest/userguide/workinginstances-custom-ami.html Using CustomAMIs>.
uiOs :: Lens' UpdateInstance (Maybe Text)
uiOs = lens _uiOs (\s a -> s { _uiOs = a })
uiOs :: Lens' UpdateInstance (Maybe Text)
uiOs = lens _uiOs (\s a -> s { _uiOs = a })
uiOs = lens _uiOs (\s a -> s { _uiOs = a })