# Package org.apache.tamaya.optional

- Interface Summary
  Interface | Description
  --- | ---
  ValueProvider | Simple (functional) interface, compatible with Java 7 that models a component that provides values.

- Class Summary
  Class | Description
  --- | ---
  OptionalConfiguration | Simplified configuration API, that can be used by code that only wants Tamaya to optionally enhance its configuration mechanism, but by default uses its own configuration by default.

- Enum Summary
  Enum | Description
  --- | ---
  EvaluationPolicy | Evaluation policy that determines if local configuration or Tamaya configuration values override.

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