sample-process-models/misc/qa/forms/test-nested-form-with-text-area/test-nested-form-with-text-area-uischema.json

{ 
  "item": { 
      "items" :  {
        "address": {
            "ui:help": "Help text for address",
            "ui:placeholder": "Type your address here"
          } 
      }   
  }
}