MISRA C:2012 Dir 4.7: Bug Finder documentation mentions this directive is "partially supported"?

Could you clarify what portion of the directive is checked/verified?

Is it that it's only able to check that a function has return that's used/checked but Bug Finder is not able to confirm that it's error information?

[Lauren Rush]

Here's the references on this directive that I could find: https://www.mathworks.com/help/bugfinder/ref/misrac2012dir4.7.html https://www.mathworks.com/help/bugfinder/ref/returnedvalueofasensitivefunctionnotchecked.html