# LegacyEvaluationObject
## Enum Variants
| Name | Value |
|---- | -----|
| Trace | trace |
| Span | span |
| Generation | generation |
| Event | event |
| Agent | agent |
| Tool | tool |
| Chain | chain |
| Retriever | retriever |
| Evaluator | evaluator |
| Embedding | embedding |
| Guardrail | guardrail |
| DatasetItem | dataset_item |
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