Component JSON - autopopulate default


I am wondering how to write my schema.json so that when I add a new object to an array in the designer, that new object is autopopulated with my “default”? For example: using the Perspective XY Chart, whenever an object is added within the “series” property, the new object has all the required objects/values.

Thanks in advance!

It should be something like:

  "properties": {
    "$yourArrayProperty": {
      "items": {
        "default": {
          "someProperty": "someDefaultValue",
          "someOtherProperty": "someOtherDefault"