code: def gen_content(
      self, metrics, loss, preds, targets, scores, contexts, *args
  ):
      (
          pred_answers,
          pred_start_pos,
          pred_end_pos,
          pred_has_answer,
      ) = preds
      (
          true_answers,
          true_start_pos,
          true_end_pos,
          true_has_answer,
      ) = targets
      start_pos_scores, end_pos_scores, has_answer_scores = scores
      for i in range(len(pred_answers)):
          yield [
              contexts[SquadMetricReporter.ROW_INDEX][i],
              contexts[SquadMetricReporter.QUES_COLUMN][i],
              contexts[SquadMetricReporter.DOC_COLUMN][i],
              pred_answers[i],
              true_answers[i],
              pred_start_pos[i],
              pred_end_pos[i],
              true_start_pos[i],
              true_end_pos[i],
              start_pos_scores[i],
              end_pos_scores[i],
              pred_has_answer[i],
              true_has_answer[i],
              has_answer_scores[i],
          ]
  
imports: import re
  import string
  from collections import Counter
  from itertools import zip_longest
  from typing import Dict, List
  import numpy
  from pytext.common.constants import Stage
  from pytext.metric_reporters.channel import Channel, ConsoleChannel, FileChannel
  from pytext.metric_reporters.metric_reporter import MetricReporter
  from pytext.metrics import compute_classification_metrics, LabelPrediction
  from pytext.metrics.squad_metrics import SquadMetrics
label_desc: Use image node_id 2 for calling the SquadFileChannel obj's underlying member method code with example usage: obj.gen_content(metrics, loss, preds, targets, scores, contexts) without return types