# MessageContentTextAnnotationsFileCitationObject
## Properties
**r#type** | **String** | Always `file_citation`. |
**text** | **String** | The text in the message content that needs to be replaced. |
**file_citation** | [**models::MessageContentTextAnnotationsFileCitationObjectFileCitation**](MessageContentTextAnnotationsFileCitationObject_file_citation.md) | |
**start_index** | **i32** | |
**end_index** | **i32** | |
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