code: def render_config(config, indent=""):
      """
      Pretty-print a config in sort-of-JSON+comments.
      """
      # Add four spaces to the indent.
      new_indent = indent + "    "
  
      return "".join(
          [
              # opening brace + newline
              "{\n",
              # "type": "...", (if present)
              '{new_indent}"type": "{config.typ3}",\n'
              if config.typ3
              else "",
              # render each item
              "".join(
                  _render(item, new_indent) for item in config.items
              ),
              # indent and close the brace
              indent,
              "}\n",
          ]
      )
  
imports: from __future__ import absolute_import
  from __future__ import print_function
  import collections
  import inspect
  import importlib
  import json
  import re
  import torch
  from numpydoc.docscrape import NumpyDocString
  from allennlp.common import Registrable, JsonDict
  from allennlp.data.iterators import DataIterator
  from allennlp.data.vocabulary import Vocabulary
  from allennlp.models.model import Model
  from allennlp.modules.seq2seq_encoders import _Seq2SeqWrapper
  from allennlp.modules.seq2vec_encoders import _Seq2VecWrapper
  from allennlp.modules.token_embedders import Embedding
  from allennlp.nn.initializers import Initializer
  from allennlp.nn.regularizers import Regularizer
  from allennlp.training.optimizers import Optimizer
  from allennlp.training.trainer import Trainer
label_desc: Use image node_id 7 for calling a global function with example usage: render_config(config, indent) and returns: str