type Cfg struct {
Set CfgSet `cmd:"" name:"set" aliases:"s" help:"set a property in the config file"`
Get CfgGet `cmd:"" name:"get" aliases:"g" help:"get a property from the config file"`
}
type CfgSet struct {
Key string `arg:"" enum:"${config_keys}" help:"name of the parameter that is being set"`
Value string `arg:"" help:"value of the parameter that is being set"`
}