class_docstr: Test NIR reflectance compositor.
docstr: Fake refl_from_tbs.
docstr_tok: ["Fake","refl_from_tbs","."]
code: def fake_refl_from_tbs(
      self, sun_zenith, da_nir, da_tb11, tb_ir_co2=None
  ):
      """Fake refl_from_tbs."""
      del sun_zenith, da_nir, da_tb11
      if tb_ir_co2 is not None:
          return self.refl_with_co2
      return self.refl
  
imports: import unittest
  from datetime import datetime
  from unittest import mock
  import dask.array
  import numpy
  import pytest
  import xarray
  from pyresample.geometry import AreaDefinition, StackedAreaDefinition
  from pytest_lazyfixture import lazy_fixture
label_desc: Use image node_id 2 for calling the TestNIRReflectance obj's underlying member method code with example usage: obj.fake_refl_from_tbs(sun_zenith, da_nir, da_tb11, tb_ir_co2) and returns: self, self