FeatureFlag

constructor(key: String, defaultValue: String, allowedValues: Set<String>, type: FeatureFlagType = FeatureFlagType.STRING, description: String = "", mutable: Boolean = true, source: String = "application")

constructor(key: String, defaultValue: Boolean, description: String = "", mutable: Boolean = true, source: String = "application")

Convenience constructor for the common on/off flag.