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in my current child-theme project – I have 4 files – functions.php, screenshot.png, style.css, and just added a theme.json.
I copied a short snippet example from the [WordPress docs](https://developer.wordpress.org/block-editor/how-to-guides/themes/theme-json/) to test out. But I’m not sure if it is working or overriding the parent theme.json. Do I need to write some kind of action in functions.php?
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