code: def get_issues(self, sortby=None):
          
  
          self._ensure_cleaned_issues()
          return self._sort_issues(self._cleaned_issues, sortby)
docs: Retrieves the issues in the collection.
  
          :param sortby: the properties to sort the issues by
          :type sortby: list(str)
          :rtype: list(tidypy.Issue)