code: def eci2ecef(eng, matmap3d: bool, utc_m, eci):
      if matmap3d:
          return eng.matmap3d.eci2ecef(utc_m, *eci, nargout=3)
  
      return np.array(
          eng.eci2ecef(utc_m, np.asarray(eci), nargout=1)
      ).squeeze()
  
file_path: pymap3d/src/pymap3d/tests/test_matlab_ecef2eci.py
imports: from __future__ import annotations
  from datetime import datetime
  import pytest
  from pytest import approx
  import pymap3d
label_desc: Use image node_id 2 for calling a global function with example usage: eci2ecef(eng, matmap3d, utc_m, eci) and returns: np, eng