---
title: "MTSourceData | Mobile sdk | Mobile sdk ios | Ios"
description: "The style spec representation of the source if the event has a dataType of source ."
---

> For AI agents: a documentation index is available at [/llms.txt](https://docs.maptiler.com/llms.txt). Markdown versions of all pages are available by appending .md to any URL.

# MTSourceData

```
public struct MTSourceData : Codable
```

The style spec representation of the source if the event has a dataType of source .

-   `[init(from:)](#/s:Se4fromxs7Decoder_p_tKcfc)`
    
    #### Declaration
    
    Swift
    
    ```
    public init(from decoder: any Decoder) throws
    ```