| Interface | Description | 
|---|---|
| Origin | Interface that uniquely represents the origin of an item. | 
| OriginLookup<K> | An interface that may be implemented by an object that can lookup  Origininformation from a given key. | 
| OriginProvider | Interface to provide access to the origin of an item. | 
| Class | Description | 
|---|---|
| OriginTrackedValue | |
| PropertySourceOrigin | Originfrom aPropertySource. | 
| SystemEnvironmentOrigin | Originfor an item loaded from the system environment. | 
| TextResourceOrigin | Originfor an item loaded from a text resource. | 
| TextResourceOrigin.Location | A location (line and column number) within the resource. | 
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