code: func expandCustomizationSysprep(d *schema.ResourceData) *types.CustomizationSysprep {
  	obj := &types.CustomizationSysprep{
  		GuiUnattended:  expandCustomizationGuiUnattended(d),
  		UserData:       expandCustomizationUserData(d),
  		GuiRunOnce:     expandCustomizationGuiRunOnce(d),
  		Identification: expandCustomizationIdentification(d),
  	}
  	return obj
  }
docs: // expandCustomizationSysprep reads certain ResourceData keys and
  // returns a CustomizationSysprep.