{
  "context": "This criteria evaluates the engineer's ability to correctly use the tns-platform-declarations package's unmanaged reference lifecycle system for iOS Core Foundation memory management. The focus is on proper usage of Unmanaged<T> and its associated methods to handle different ownership semantics.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Unmanaged type usage",
      "description": "Uses the Unmanaged<T> interface or type to represent unmanaged Core Foundation references (e.g., Unmanaged<NSString> or similar pattern for Core Foundation strings)",
      "max_score": 20
    },
    {
      "name": "takeRetainedValue implementation",
      "description": "Uses takeRetainedValue() method in the convertRetainedString function to properly consume a +1 retain count reference and obtain the managed value",
      "max_score": 25
    },
    {
      "name": "takeUnretainedValue implementation",
      "description": "Uses takeUnretainedValue() method in the convertUnretainedString function to obtain the value without affecting the retain count for +0 references",
      "max_score": 25
    },
    {
      "name": "Correct semantic distinction",
      "description": "Demonstrates understanding that takeRetainedValue() is for ownership transfer (consumes +1) while takeUnretainedValue() is for borrowed references (+0), using each method in the appropriate function",
      "max_score": 20
    },
    {
      "name": "String value extraction",
      "description": "Correctly extracts and returns the JavaScript string value from the managed NSString or CFString object after calling the appropriate take method",
      "max_score": 10
    }
  ]
}