code: def log_warning_deprecation_plotly(plotting_backend):
      if plotting_backend == "matplotlib":
          log.warning(
              "DeprecationWarning: default plotting_backend will be changed to plotly in a future version. "
              "Switch to plotly by calling `m.set_plotting_backend('plotly')`."
          )
  
file_path: neural_prophet/neuralprophet/plot_utils.py
imports: import logging
  import warnings
  from collections import OrderedDict
  from typing import Optional
  import numpy
  import torch
  from neuralprophet import time_dataset, utils_torch
label_desc: Use image node_id 1 for calling a global function with example usage: log_warning_deprecation_plotly(plotting_backend) without return types