code: def exclude_multi_ts(preprocessing_function):
      """Decorator for multi time series (not to be confused with multivariate ts) type checking"""
  
      def wrapper(self, input_data, source_name, *args, **kwargs):
          if data_type_is_multi_ts(input_data):
              return input_data
          return preprocessing_function(
              self, input_data, source_name, *args, **kwargs
          )
  
      return wrapper
  
label_desc: Use image node_id 2 for calling a global function with example usage: exclude_multi_ts(preprocessing_function) and returns: wrapper, preprocessing_function, input_data