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.
docstr: Return the string value representing the choices made
  
  choices - a collection of choices as returned by make_measurement_choice
code: def get_value_string(choices):
      """Return the string value representing the choices made
  
      choices - a collection of choices as returned by make_measurement_choice
      """
      return ",".join(choices)
  
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 2 for calling the SubdirectoryFilter obj's underlying member method code with example usage: obj.get_value_string(choices) and returns: str