code: def get_load_times(self, asset_type):
          
          load_times = []
          search_str = '{0}_load_time'.format(asset_type)
          for har_page in self.pages:
              val = getattr(har_page, search_str, None)
              if val is not None:
                  load_times.append(val)
          return load_times
docs: Just a ``list`` of the load times of a certain asset type for each page
  
          :param asset_type: ``str`` of the asset type to return load times for