content: {
    "$defs": {
      "PatternTest": {
        "additionalProperties": false,
        "properties": {
          "with_pattern": {
            "maxLength": 50,
            "minLength": 1,
            "pattern": "[0-9]{1,4}",
            "type": "string"
          }
        },
        "required": [
          "with_pattern"
        ],
        "type": "object"
      }
    },
    "$id": "https://github.com/invopop/jsonschema/pattern-test",
    "$ref": "#/$defs/PatternTest",
    "$schema": "https://json-schema.org/draft/2020-12/schema"
  }