IConfigKey

Configuration data key, used for config.lookup() et al

IConfigSource

Something that can be queried for configuration data

IConfigurable

Object which can be configured with rules for configuration keys

IConfigurationRoot

A root component that acknowledges its configuration responsibilities

IIniParser

Parser object passed to ISettingParser instances

IRule

Rule to compute a property value for a target object

IServiceArea

A component that acts as a home for services and their configuration

ISettingLoader

Callable used to load configuration data

ISettingParser

Handler for name=value settings in an .ini file section

ISmartProperty

An property value that itself should be treated as a rule

_NullConfigRoot

Adapter to handle missing configuration root