470         RegisterCallback callback  = mCallback;  in InvokeAndClear()  local
475         callback(&aInstance, requestId, aError);  in InvokeAndClear()
4886     ResultCallback *callback;  in Add()  local
4888     callback = FindCallbackMatching(aCallback);  in Add()
4889     VerifyOrExit(callback == nullptr, error = kErrorAlready);  in Add()
4893     callback = ResultCallback::Allocate(aCallback);  in Add()
4894     OT_ASSERT(callback != nullptr);  in Add()
4896     mCallbacks.Push(*callback);  in Add()
4940         As<BrowseCache>().ReportResultsTo(*callback);  in Add()
4943         As<SrvCache>().ReportResultTo(*callback);  in Add()
4946         As<TxtCache>().ReportResultTo(*callback);  in Add()
4950         As<AddrCache>().ReportResultsTo(*callback);  in Add()
4960     ResultCallback *callback = FindCallbackMatching(aCallback);  in Remove()  local
4962     VerifyOrExit(callback != nullptr);  in Remove()
4970     callback->ClearCallback();  in Remove()
5050     ResultCallback *callback = nullptr;  in FindCallbackMatching()  local
5055         callback = mCallbacks.FindMatching(aCallback.mSharedCallback.mBrowse);  in FindCallbackMatching()
5058         callback = mCallbacks.FindMatching(aCallback.mSharedCallback.mSrv);  in FindCallbackMatching()
5061         callback = mCallbacks.FindMatching(aCallback.mSharedCallback.mTxt);  in FindCallbackMatching()
5065         callback = mCallbacks.FindMatching(aCallback.mSharedCallback.mAddress);  in FindCallbackMatching()
5069     return callback;  in FindCallbackMatching()
5172     for (const ResultCallback &callback : mCallbacks)  in InvokeCallbacks()  local
5174         callback.Invoke(GetInstance(), aResult);  in InvokeCallbacks()