code: def parse_result_format(result_format):
      
      if isinstance(result_format, string_types):
          result_format = {
              'result_format': result_format,
              'partial_unexpected_count': 20
          }
      else:
          if 'partial_unexpected_count' not in result_format:
              result_format['partial_unexpected_count'] = 20
  
      return result_format
docs: This is a simple helper utility that can be used to parse a string result_format into the dict format used
      internally by great_expectations. It is not necessary but allows shorthand for result_format in cases where
      there is no need to specify a custom partial_unexpected_count.