code: def from_config(cls, config, *args, tensorizers=None, **kwargs):
      return cls(
          channels=[
              ConsoleChannel(),
              SquadFileChannel((Stage.TEST,), config.output_path),
          ],
          n_best_size=config.n_best_size,
          max_answer_length=config.max_answer_length,
          ignore_impossible=config.ignore_impossible,
          has_answer_labels=tensorizers["has_answer"].vocab._vocab,
          tensorizer=tensorizers["squad_input"],
          false_label=config.false_label,
      )
  
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 1 for calling the SquadMetricReporter obj's underlying member method code with example usage: obj.from_config(cls, config) and returns: cls