type ValueSource uint8

// Constants for ValueSource
const (
	ValueSourceAbsent ValueSource = iota // this is an error case
	ValueSourceDef
	ValueSourceCfg
	ValueSourceEnv
)

// ResolveConfigParam returns the effective value of a configuration parameter,
// within a subsystem and subsystem target. The effective value is, in order of
// decreasing precedence:
//

		return args, err
	}

	getCfg := func(cfgParam string) string {
		// As parameters are already validated, we skip checking
		// if the config param was found.
		val, _, _ := s.ResolveConfigParam(config.PolicyPluginSubSys, config.Default, cfgParam, false)
		return val
	}

	pluginURL := getCfg(URL)
	if pluginURL == "" {
		return args, nil
	}

	u, err := xnet.ParseHTTPURL(pluginURL)

		return l, err
	}

	getCfgVal := func(cfgParam string) string {
		// As parameters are already validated, we skip checking
		// if the config param was found.
		val, _, _ := s.ResolveConfigParam(config.IdentityLDAPSubSys, config.Default, cfgParam, false)
		return val
	}

	ldapServer := getCfgVal(ServerAddr)
	if ldapServer == "" {
		return l, nil
	}

	}

	for _, cfgName := range openIDTargets {
		getCfgVal := func(cfgParam string) string {
			// As parameters are already validated, we skip checking
			// if the config param was found.
			val, _, _ := s.ResolveConfigParam(config.IdentityOpenIDSubSys, cfgName, cfgParam, false)
			return val
		}

		// In the past, when only one openID provider was allowed, there
		// was no `enable` parameter - the configuration is turned off