FindReferences.IsMemberMatch does not work for interface members

[luiscubal]

I'm using FindReferences.FindReferencesInFile to find all (explicit) implementations of an interface member.

Unfortunately, it's not working. I suspect member definitions are only matched if IsMemberMatch returns true and - at least for explicit implementations - IsMemberMatch returns false. The cause of this result is:

if (!isVirtualCall)
    return false;

However, even if those two lines are commented out, the result is still false. Note that, in this case, member.IsOverride is false. Also, isInterfaceCall is also false because referencedMember.DeclaringTypeDefinition.Kind != TypeKind.Interface (it is instead a class)