Add mock statement to test re #22022

qt/scientific_interfaces/test/MuonAnalysisFitFunctionPresenterTest.h

@@ -65,6 +65,7 @@ public:
   MOCK_CONST_METHOD0(getWorkspaceNamesToFit, std::vector<std::string>());
   MOCK_METHOD1(userChangedDatasetIndex, void(int));
   MOCK_METHOD1(setMultiFittingMode, void(bool));
+  MOCK_CONST_METHOD0(isMultiFittingMode, bool());
   MOCK_METHOD1(fitRawDataClicked, void(bool));
   MOCK_METHOD0(doRemoveGuess, void());
   MOCK_METHOD0(doPlotGuess, void());