docs: def _create_dicomdir_info(self):
          """
          Function crates list of all files in dicom dir with all IDs
          """
  
          filelist = files_in_dir(self.dirpath)
          files = []
          metadataline = {}
  
          for filepath in filelist:
              head, teil = os.path.split(filepath)
              dcmdata = None
              if os.path.isdir(filepath):
                  logger.debug("Subdirectory found in series dir is ignored: " + str(filepath))
                  continue
              try:
                  dcmdata = pydicom.read_file(filepath)
  
              except pydicom.errors.InvalidDicomError as e:
                  # some files doesnt have DICM marker
                  try:
                      dcmdata = pydicom.read_file(filepath, force=self.force_read)
  
                      # if e.[0].startswith("File is missing \\'DICM\\' marker. Use force=True to force reading")
                  except Exception as e:
                      if teil != self.dicomdir_filename:
                          # print('Dicom read problem with file ' + filepath)
                          logger.info('Dicom read problem with file ' + filepath)
                          import traceback
                          logger.debug(traceback.format_exc())
              if hasattr(dcmdata, "DirectoryRecordSequence"):
                  # file is DICOMDIR - metainfo about files in directory
                  # we are not using this info
                  dcmdata = None
  
              if dcmdata is not None:
                  metadataline = _prepare_metadata_line(dcmdata, teil)
                  files.append(metadataline)
  
          # if SliceLocation is None, it is sorted to the end
          # this is not necessary it can be deleted
          files.sort(key=lambda x: (x['SliceLocation'] is None, x["SliceLocation"]))
  
          dcmdirplus = {'version': __version__, 'filesinfo': files, }
          if "StudyDate" in metadataline:
              dcmdirplus["StudyDate"] = metadataline["StudyDate"]
          return dcmdirplus