code: def _compute_callables_count(self, iters: Dict[str, Any]):
          
          count = dict.fromkeys([issue["callable"] for issue in iters["issues"]], 0)
          for issue in iters["issues"]:
              count[issue["callable"]] += 1
  
          return count
docs: Iterate over all issues and count the number of times each callable
          is seen.