docstr: Test to see if the module is in a valid state to run
  
  Throw a ValidationError exception with an explanation if a module is not valid.
  Make sure that we output at least one image if split
docstr_tok: ["Test","to","see","if","the","module","is","in","a","valid","state","to","run","Throw","a","ValidationError","exception","with","an","explanation","if","a","module","is","not","valid",".","Make","sure","that","we","output","at","least","one","image","if","split"]
code: def validate_module(self, pipeline):
      """Test to see if the module is in a valid state to run
  
      Throw a ValidationError exception with an explanation if a module is not valid.
      Make sure that we output at least one image if split
      """
      if self.should_split():
          if (self.rgb_or_channels == CH_RGB) and not any(
              [
                  self.use_red.value,
                  self.use_blue.value,
                  self.use_green.value,
              ]
          ):
              raise ValidationError(
                  "You must output at least one of the color images when in split mode",
                  self.use_red,
              )
          if (self.rgb_or_channels == CH_HSV) and not any(
              [
                  self.use_hue.value,
                  self.use_saturation.value,
                  self.use_value.value,
              ]
          ):
              raise ValidationError(
                  "You must output at least one of the color images when in split mode",
                  self.use_hue,
              )
  
imports: import re
  import matplotlib.colors
  import numpy
  from cellprofiler_core.image import Image
  from cellprofiler_core.module import Module
  from cellprofiler_core.setting import Binary
  from cellprofiler_core.setting import HiddenCount
  from cellprofiler_core.setting import SettingsGroup
  from cellprofiler_core.setting import ValidationError
  from cellprofiler_core.setting.choice import Choice
  from cellprofiler_core.setting.do_something import DoSomething
  from cellprofiler_core.setting.do_something import RemoveSettingButton
  from cellprofiler_core.setting.subscriber import ImageSubscriber
  from cellprofiler_core.setting.text import Float
  from cellprofiler_core.setting.text import ImageName
  from cellprofiler_core.setting.text import Integer
label_desc: Use image node_id 7 for calling the ColorToGray obj's underlying member method code with example usage: obj.validate_module(pipeline) without return types