code: def files_inout_handler(ctx, param, value):
      """Process and validate input file names"""
      return tuple(
          file_in_handler(ctx, param, item) for item in value[:-1]
      ) + tuple(value[-1:])
  
file_path: rasterio/rasterio/rio/options.py
imports: import logging
  import os
  import re
  import click
  import rasterio
  import rasterio.shutil
  from rasterio._path import _parse_path, _UnparsedPath
label_desc: Use image node_id 5 for calling a global function with example usage: files_inout_handler(ctx, param, value) and returns: unknown