```ts
type DocumentContentBlockData = TextBlockData;
```

Defined in: [src/types/media.ts:472](https://github.com/strands-agents/harness-sdk/blob/57d070582e9bd93afb549b4d2f976ce0dbaf03b6/strands-ts/src/types/media.ts#L472)

Content blocks that can be nested inside a document. Documents can contain text blocks for structured content.