code: private List<?> populateEntityObjectsList(DataFrame dataFrame, EntityMetadata m)
      {
          List results = new ArrayList();
          String[] columns = dataFrame.columns();
          Map<String, Integer> map = createMapOfColumnIndex(columns);
          for (Row row : dataFrame.collectAsList())
          {
              Object entity = populateEntityFromDataFrame(m, map, row);
              results.add(entity);
          }
          return results;
      }
docs: Populate entity objects list.
  
  @param dataFrame
  the data frame
  @param m
  the m
  @return the list