OpenAPI POST request generates incorrect XML example payload

curl -X 'POST' \
  'http://localhost:8181/rests/data/network-topology:network-topology/topology=topology-netconf/node=36001-sim-device/yang-ext:mount/toaster-example:toaster' \
  -H 'accept: */*' \
  -H 'Content-Type: application/xml' \
  -d '<?xml version="1.0" encoding="UTF-8"?>
<toaster xmlns="http://netconfcentral.org/ns/toaster/example">
	<darknessFactor>0</darknessFactor>
</toaster>' 

curl -X 'POST' \
  'http://localhost:8181/rests/data/network-topology:network-topology/topology=topology-netconf/node=36001-sim-device/yang-ext:mount/toaster-example:toaster' \
  -H 'accept: */*' \
  -H 'Content-Type: application/xml' \
  -d '<?xml version="1.0" encoding="UTF-8"?>
<darknessFactor xmlns="http://netconfcentral.org/ns/toaster/example">0</darknessFactor>' 

  "toaster-example_toaster": {
    "properties": {
      "darknessFactor": {
        "default": 1000,
        "description": "The darkness factor. Basically, the number of ms to multiple the doneness value by.",
        "type": "integer",
        "example": 0,
        "format": "int64",
        "uniqueItems": false
      }
    },
    "xml": {
      "name": "toaster",
      "namespace": "http://netconfcentral.org/ns/toaster/example",
      "attribute": false,
      "wrapped": false
    },
    "description": "Top-level container for all toaster database objects.",
    "title": "toaster-example_toaster",
    "type": "object"
  }