docs: public Collection<Invocation> getUnusedStubbingsByLocation(Iterable<Object> mocks) {
          Set<Stubbing> stubbings = AllInvocationsFinder.findStubbings(mocks);
  
          //1st pass, collect all the locations of the stubbings that were used
          //note that those are _not_ locations where the stubbings was used
          Set<String> locationsOfUsedStubbings = new HashSet<String>();
          for (Stubbing s : stubbings) {
              if (!UnusedStubbingReporting.shouldBeReported(s)) {
                  String location = s.getInvocation().getLocation().toString();
                  locationsOfUsedStubbings.add(location);
              }
          }
  
          //2nd pass, collect unused stubbings by location
          //If the location matches we assume the stubbing was used in at least one test method
          //Also, using map to deduplicate reported unused stubbings
          // if unused stubbing appear in the setup method / constructor we don't want to report it per each test case
          Map<String, Invocation> out = new LinkedHashMap<String, Invocation>();
          for (Stubbing s : stubbings) {
              String location = s.getInvocation().getLocation().toString();
              if (!locationsOfUsedStubbings.contains(location)) {
                  out.put(location, s.getInvocation());
              }
          }
  
          return out.values();
      }