-- | The ARN of an IAM profile that is the default profile for all of the stack's
-- EC2 instances. For more information about IAM ARNs, see <http://docs.aws.amazon.com/IAM/latest/UserGuide/Using_Identifiers.html Using Identifiers>.
usDefaultInstanceProfileArn :: Lens' UpdateStack (Maybe Text)
usDefaultInstanceProfileArn =
    lens _usDefaultInstanceProfileArn
        (\s a -> s { _usDefaultInstanceProfileArn = a })
usDefaultInstanceProfileArn :: Lens' UpdateStack (Maybe Text)
usDefaultInstanceProfileArn =
    lens _usDefaultInstanceProfileArn
        (\s a -> s { _usDefaultInstanceProfileArn = a })
usDefaultInstanceProfileArn =
    lens _usDefaultInstanceProfileArn
        (\s a -> s { _usDefaultInstanceProfileArn = a })