dev/defs/animation/keyframe_string.json

{
  "name": "KeyFrameString",
  "key": {
    "int": 142,
    "string": "keyframestring"
  },
  "extends": "animation/keyframe.json",
  "properties": {
    "value": {
      "type": "String",
      "typeRuntime": "String",
      "initialValue": "''",
      "key": {
        "int": 280,
        "string": "value"
      }
    }
  }
}