code: def is_source_enabled() -> bool:
      source_var = conf.get(
          "openlineage",
          "disable_source_code",
          fallback=os.getenv("OPENLINEAGE_AIRFLOW_DISABLE_SOURCE_CODE"),
      )
      return isinstance(source_var, str) and source_var.lower() not in (
          "true",
          "1",
          "t",
      )
  
imports: from __future__ import annotations
  import datetime
  import json
  import logging
  import os
  from contextlib import suppress
  from functools import wraps
  from typing import TYPE_CHECKING, Any, Iterable
  from urllib.parse import parse_qsl, urlencode, urlparse, urlunparse
  import attrs
  from attrs import asdict
  from openlineage.client.utils import RedactMixin
  from airflow.compat.functools import cache
  from airflow.configuration import conf
  from airflow.providers.openlineage.plugins.facets import AirflowMappedTaskRunFacet, AirflowRunFacet
  from airflow.utils.context import AirflowContextDeprecationWarning
  from airflow.utils.log.secrets_masker import Redactable, Redacted, SecretsMasker, should_hide_value_for_key
label_desc: Use image node_id 13 for calling a global function with example usage: is_source_enabled() and returns: unknown