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Whether a watched method still runs the code its framework shipped, or something replaced it while the process was running
basset request get, captured against a running app:
CAPTURED ELAPSED INSTRUMENT
launch 3262696169962734033
2026-08-23T14:38:03.806Z +0.0s runtime.methodOwners(method)
├─ methodClass UIViewController
├─ methodName viewWillAppear:
├─ implementationInMappedImage true
├─ ownedByDeclaringImage false
└─ imageName libMainThreadChecker.dylib
2026-08-23T14:38:03.807Z +0.0s runtime.methodOwners(method)
├─ methodClass UIApplication
├─ methodName sendEvent:
├─ implementationInMappedImage true
├─ ownedByDeclaringImage false
└─ imageName UIKit
2026-08-23T14:38:03.807Z +0.0s runtime.methodOwners(method)
├─ methodClass NSObject
├─ methodName forwardInvocation:
├─ implementationInMappedImage true
├─ ownedByDeclaringImage true
└─ imageName libobjc.A.dylib
viewWillAppear: and sendEvent: resolve to libMainThreadChecker.dylib
and UIKit rather than the class that declares them —
ownedByDeclaringImage: false is what that replacement looks like from
outside.