code: def issue_count(self, include_unclean=False):
          
  
          if include_unclean:
              return len(self._all_issues)
          self._ensure_cleaned_issues()
          return len(self._cleaned_issues)
docs: Returns the number of issues in the collection.
  
          :param include_unclean:
              whether or not to include issues that are being ignored due to
              being a duplicate, excluded, etc.
          :type include_unclean: bool
          :rtype: int