code: def _get_json_data(self) -> Iterator[JsonDict]:
      if self._input_file == "-":
          for line in sys.stdin:
              if not line.isspace():
                  yield self._predictor.load_line(line)
      else:
          input_file = cached_path(self._input_file)
          with open_compressed(input_file) as file_input:
              for line in file_input:
                  if not line.isspace():
                      yield self._predictor.load_line(line)
  
imports: from typing import List, Iterator, Optional
  import argparse
  import sys
  import json
  from allennlp.commands.subcommand import Subcommand
  from allennlp.common import logging
  from allennlp.common.checks import check_for_gpu, ConfigurationError
  from allennlp.common.file_utils import cached_path, open_compressed
  from allennlp.common.util import lazy_groups_of
  from allennlp.data.dataset_readers import MultiTaskDatasetReader
  from allennlp.models.archival import load_archive
  from allennlp.predictors.predictor import Predictor, JsonDict
  from allennlp.data import Instance
label_desc: Use image node_id 5 for calling the _PredictManager obj's underlying member method code with example usage: obj._get_json_data() without return types