class_docstr: Test reading multiple CLAAS-2 files.
class_docstr_tok: ["Test","reading","multiple","CLAAS-2","files","."]
docstr: Create a multi-file reader.
docstr_tok: ["Create","a","multi-file","reader","."]
code: def multi_file_reader(self, reader, fake_files):
      """Create a multi-file reader."""
      loadables = reader.select_files_from_pathnames(fake_files)
      reader.create_filehandlers(loadables)
      return reader
  
imports: import datetime
  import os
  import numpy
  import pytest
  import xarray
  from pyresample.geometry import AreaDefinition
  from satpy.tests.utils import make_dataid
label_desc: Use image node_id 1 for calling the TestCLAAS2MultiFile obj's underlying member method code with example usage: obj.multi_file_reader(reader, fake_files) and returns: reader