code: def fixture_reader():
      """Return MVIRI FIDUCEO FCDR reader."""
      from satpy._config import config_search_paths
      from satpy.readers import load_reader
  
      reader_configs = config_search_paths(
          os.path.join("readers", "mviri_l1b_fiduceo_nc.yaml")
      )
      reader = load_reader(reader_configs)
      return reader
  
imports: from __future__ import annotations
  import os
  from unittest import mock
  import dask.array
  import numpy
  import pytest
  import xarray
  from pyproj import CRS
  from pyresample.geometry import AreaDefinition
  from satpy.readers.mviri_l1b_fiduceo_nc import ALTITUDE, EQUATOR_RADIUS, POLE_RADIUS, DatasetWrapper, FiduceoMviriEasyFcdrFileHandler, FiduceoMviriFullFcdrFileHandler
  from satpy.tests.utils import make_dataid
label_desc: Use image node_id 3 for calling a global function with example usage: fixture_reader() and returns: reader