Invalid additional-spring-configuration-metadata.json

{
  "properties": [
    {
      "name": "old.key",
      "type": "com.Unknown", // Reports 'Cannot resolve class 'Unknown''
      "description": "Description for old.key", // Reports 'Text should end with '.''
      "deprecation": {
        "replacement": "new.key", // Reports 'Cannot resolve configuration key reference 'new.key''
        "reason": "Reason", // Reports 'Text should end with '.''
        "level": "warning"
       }
    },
    {
      "name": "duplicate", // Reports 'Duplicate entry for 'duplicate''
      "type": "java.lang.String"
    },
    {
      "name": "duplicate", // Reports 'Duplicate entry for 'duplicate''
      "type": "java.lang.String"
    },
    {
      // Reports 'Missing required 'name''
      "type": "java.lang.String"
    }
  ]
}