code: def parse_with_retrieved(self, retrieved):
          
          from aiida.common.exceptions import InvalidOperation
          import os
  
          output_path = None
          error_path = None
          try:
              output_path, error_path = self._fetch_output_files(retrieved)
          except InvalidOperation:
              raise
          except IOError as e:
              self.logger.error(e.message)
              return False, ()
  
          if output_path is None and error_path is None:
              self.logger.error("No output files found")
              return False, ()
  
          return True, self._get_output_nodes(output_path, error_path)
docs: Receives in input a dictionary of retrieved nodes.
          Does all the logic here.