code: def set_value_to_default_if_not_set(
      env: dict[str, str], name: str, default: str
  ):
      """Set value of name parameter to default (indexed by name) if not set.
  
      :param env: dictionary where to set the parameter
      :param name: name of parameter
      :param default: default value
      """
      if env.get(name) is None:
          env[name] = os.environ.get(name, default)
  
imports: from __future__ import annotations
  import copy
  import json
  import os
  import re
  import sys
  from subprocess import DEVNULL, CalledProcessError, CompletedProcess
  from typing import TYPE_CHECKING
  from airflow_breeze.params.build_prod_params import BuildProdParams
  from airflow_breeze.utils.cache import read_from_cache_file
  from airflow_breeze.utils.host_info_utils import get_host_group_id, get_host_os, get_host_user_id
  from airflow_breeze.utils.path_utils import AIRFLOW_SOURCES_ROOT, SCRIPTS_DOCKER_DIR, cleanup_python_generated_files, create_mypy_volume_if_needed
  from airflow_breeze.utils.shared_options import get_verbose
  from airflow_breeze.utils.visuals import ASCIIART, ASCIIART_STYLE, CHEATSHEET, CHEATSHEET_STYLE
  from airflow_breeze.global_constants import ALLOWED_CELERY_BROKERS, ALLOWED_DEBIAN_VERSIONS, DEFAULT_PYTHON_MAJOR_MINOR_VERSION, DOCKER_DEFAULT_PLATFORM, MIN_DOCKER_COMPOSE_VERSION, MIN_DOCKER_VERSION, SEQUENTIAL_EXECUTOR
  from airflow_breeze.utils.console import Output, get_console
  from airflow_breeze.utils.run_utils import RunCommandResult, check_if_buildx_plugin_installed, run_command
label_desc: Use image node_id 14 for calling a global function with example usage: set_value_to_default_if_not_set(env, name, default) without return types