Return a document store document by id.
| REQUIRED | KEY | TYPE | DESCRIPTION |
|---|---|---|---|
| Yes | docId | str | Unique Docstore string identifier for the document. |
| KEY | TYPE | DESCRIPTION |
|---|---|---|
| success | Boolean | true if the call succeeded, false if there was an error |
| data | stream |
| TYPE | WHEN |
|---|---|
| DataNotFoundError | `docId` is not found. |