> ## Documentation Index
> Fetch the complete documentation index at: https://cantonfoundation-link-dedicated-synch.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# TopologyEvent

> This interface represents events in TopologyTransactions.

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  <h1 class="x2mdx-ref-title">TopologyEvent</h1>

  <p class="x2mdx-ref-summary">This interface represents events in TopologyTransactions.</p>

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## Signature

```java theme={"theme":{"light":"github-light","dark":"github-dark"}}
public interface TopologyEvent
```

## Members

| Member                                                        | Lifecycle | Upstream docs                                                                                                                                                                                       |
| ------------------------------------------------------------- | --------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `fromProtoEvent(TopologyTransactionOuterClass.TopologyEvent)` | -         | [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.15/com/daml/ledger/javaapi/data/TopologyEvent.html#fromProtoEvent%28com.daml.ledger.api.v2.TopologyTransactionOuterClass.TopologyEvent%29) |
| `getParticipantId()`                                          | -         | [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.15/com/daml/ledger/javaapi/data/TopologyEvent.html#getParticipantId%28%29)                                                                 |
| `toProtoEvent()`                                              | -         | [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.15/com/daml/ledger/javaapi/data/TopologyEvent.html#toProtoEvent%28%29)                                                                     |