code: def radiance_to_refl(arr, solar_flux):
      """Convert to reflectances in %."""
      return arr * np.pi * 100.0 / solar_flux
  
imports: import functools
  import logging
  import dask.array
  import numpy
  import xarray
  from dask.delayed import delayed
  from pyresample.geometry import SwathDefinition
  from satpy._compat import cached_property
  from satpy._config import get_config_path
  from satpy.readers.file_handlers import BaseFileHandler
  from satpy.readers.xmlformat import XMLFormat
  from satpy.utils import get_legacy_chunk_size
label_desc: Use image node_id 2 for calling a global function with example usage: radiance_to_refl(arr, solar_flux) and returns: unknown