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

Defined in: [src/types/media.ts:372](https://github.com/strands-agents/harness-sdk/blob/e4284b561624d906e361535ef1f1adcd5ce3461b/strands-ts/src/types/media.ts#L372)

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