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

Defined in: [src/types/media.ts:472](https://github.com/strands-agents/harness-sdk/blob/ca4c20fea3f7d62c29b021c85f336eba5937012f/strands-ts/src/types/media.ts#L472)

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