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

Defined in: [src/types/media.ts:472](https://github.com/strands-agents/harness-sdk/blob/1fd743a7fe7cba5547824c6123aab7e6f3a7f10f/strands-ts/src/types/media.ts#L472)

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