code: def _triage_coils(coils):
      return (
          coils
          if isinstance(coils, tuple)
          else _concatenate_coils(coils)
      )
  
imports: from copy import deepcopy
  import numpy
  from .._fiff.constants import FIFF
  from ..bem import _import_openmeeg, _make_openmeeg_geometry
  from ..fixes import bincount, jit
  from ..parallel import parallel_func
  from ..surface import _jit_cross, _project_onto_surface
  from ..transforms import apply_trans, invert_transform
  from ..utils import _check_option, _pl, fill_doc, logger, verbose, warn
label_desc: Use image node_id 18 for calling a global function with example usage: _triage_coils(coils) and returns: unknown