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# Struct Emit Mark Event Params

> Builder parameters for `event`.

Generated from `cargo doc --no-deps -p nemo-relay -p nemo-relay-adaptive -p nemo-relay-ffi`.

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Builder parameters for [`event`](/reference/api/rust-library-reference/nemo-relay/api/scope/fn-event).

## Fields

### `name: &'a str`

Event name to emit.

### `parent: Option<&'a ScopeHandle>`

Optional explicit parent scope.

### `data: Option<Json>`

Optional JSON payload recorded as the mark data.

### `metadata: Option<Json>`

Optional JSON metadata recorded on the emitted event.

### `timestamp: Option<DateTime<Utc>>`

Optional timestamp recorded on the emitted mark event. When omitted, the current UTC time is used.

## Implementations

### `impl<'a> EmitMarkEventParams<'a>`

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#### `builder`

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Create a builder for building `EmitMarkEventParams`. On the builder, call `.name(...)`, `.parent(...)`(optional), `.data(...)`(optional), `.metadata(...)`(optional), `.timestamp(...)`(optional) to set the values of the fields. Finally, call `.build()` to create the instance of `EmitMarkEventParams`.