wp-includes/blocks/block/block.json

{
	"$schema": "https://schemas.wp.org/trunk/block.json",
	"apiVersion": 3,
	"name": "core/block",
	"title": "Pattern",
	"category": "reusable",
	"description": "Reuse this design across your site.",
	"keywords": [ "reusable" ],
	"textdomain": "default",
	"attributes": {
		"ref": {
			"type": "number"
		},
		"content": {
			"type": "object",
			"default": {}
		}
	},
	"providesContext": {
		"pattern/overrides": "content"
	},
	"supports": {
		"customClassName": false,
		"html": false,
		"inserter": false,
		"renaming": false,
		"interactivity": {
			"clientNavigation": true
		}
	}
}