{ "name": "core/text-columns", "icon": "columns", "category": "design", "attributes": { "content": { "type": "array", "source": "query", "selector": "p", "query": { "children": { "type": "string", "source": "html" } }, "default": [ {}, {} ] }, "columns": { "type": "number", "default": 2 }, "width": { "type": "string" } }, "supports": { "inserter": false } }