code: def test_plot_epochs_scalings(epochs, scalings, browser_backend):
      """Test the valid options for scalings."""
      epochs.plot(scalings=scalings)
  
imports: import platform
  import matplotlib.pyplot
  import numpy
  import pytest
  from mne import Epochs, EpochsArray, create_info
  from mne.datasets import testing
  from mne.event import make_fixed_length_events
  from mne.viz import plot_drop_log
label_desc: Use image node_id 3 for calling a global function with example usage: test_plot_epochs_scalings(epochs, scalings, browser_backend) without return types