code: def _load_backend(backend_name):
      global backend
      if backend_name == "matplotlib":
          backend = importlib.import_module(
              name="._mpl_figure", package="mne.viz"
          )
      else:
          from mne_qt_browser import _pg_figure as backend
  
      logger.info(f"Using {backend_name} as 2D backend.")
  
      return backend
  
imports: import importlib
  from abc import ABC, abstractmethod
  from collections import OrderedDict
  from contextlib import contextmanager
  from copy import deepcopy
  from itertools import cycle
  import numpy
  from .._fiff.pick import _DATA_CH_TYPES_SPLIT
  from ..defaults import _handle_default
  from ..filter import _iir_filter, _overlap_add_filter
  from ..fixes import _compare_version
  from ..utils import _check_option, _get_stim_channel, _validate_type, get_config, logger, set_config, verbose
  from .backends._utils import VALID_BROWSE_BACKENDS
  from .utils import _get_color_list, _setup_plot_projector, _show_browser
label_desc: Use image node_id 1 for calling a global function with example usage: _load_backend(backend_name) and returns: backend