class_docstr: A setting that indicates which subdirectories should be excluded from an operation
  
  The subdirectory filter holds a collection of subdirectories that
  should be excluded from a file discovery operation that scans
  subdirectories.
code: def alter_for_create_batch_files(self, fn_alter_path):
      selections = [
          fn_alter_path(selection)
          for selection in self.get_selections()
      ]
      self.value = self.get_value_string(selections)
  
file_path: CellProfiler/src/subpackages/core/cellprofiler_core/setting/multichoice/_subdirectory_filter.py
imports: import os
  from ._multichoice import MultiChoice
  from .._validation_error import ValidationError
  from ..text import Directory
label_desc: Use image node_id 3 for calling the SubdirectoryFilter obj's underlying member method code with example usage: obj.alter_for_create_batch_files(fn_alter_path) without return types