code: def export_evokeds(
      fname, evoked, fmt="auto", *, overwrite=False, verbose=None
  ):
      """Export evoked dataset to external formats.
  
      This function is a wrapper for format-specific export functions. The export
      function is selected based on the inferred file format. For additional
      options, use the format-specific functions.
  
      %(export_fmt_support_evoked)s
  
      %(export_warning)s
  
      Parameters
      ----------
      %(fname_export_params)s
      evoked : Evoked instance, or list of Evoked instances
          The evoked dataset, or list of evoked datasets, to export to one file.
          Note that the measurement info from the first evoked instance is used,
          so be sure that information matches.
      %(export_fmt_params_evoked)s
      %(overwrite)s
  
          .. versionadded:: 0.24.1
      %(verbose)s
  
      See Also
      --------
      mne.write_evokeds
      mne.export.export_evokeds_mff
  
      Notes
      -----
      .. versionadded:: 0.24
  
      %(export_warning_note_evoked)s
      """
      fname = str(_check_fname(fname, overwrite=overwrite))
      supported_export_formats = {
          "mff": ("mff",),
      }
      fmt = _infer_check_export_fmt(
          fmt, fname, supported_export_formats
      )
  
      if not isinstance(evoked, list):
          evoked = [evoked]
  
      logger.info(f"Exporting evoked dataset to {fname}...")
  
      if fmt == "mff":
          export_evokeds_mff(fname, evoked, overwrite=overwrite)
  
imports: import os.path
  from ..utils import _check_fname, _validate_type, logger, verbose, warn
  from ._egimff import export_evokeds_mff
label_desc: Use image node_id 3 for calling a global function with example usage: export_evokeds(fname, evoked, fmt) without return types