code: def _plot(
      cls,
      ax,
      y,
      style=None,
      bw_method=None,
      ind=None,
      column_num=None,
      stacking_id=None,
      **kwds,
  ):
      y = KdePlotBase.compute_kde(y, bw_method=bw_method, ind=ind)
      lines = PandasMPLPlot._plot(ax, ind, y, style=style, **kwds)
      return lines
  
imports: from pyspark.loose_version import LooseVersion
  import matplotlib
  import numpy
  from matplotlib.axes._base import _process_plot_format
  from pandas.core.dtypes.inference import is_list_like
  from pandas.io.formats.printing import pprint_thing
  from pandas.plotting._matplotlib import BarPlot, BoxPlot, HistPlot, PiePlot, AreaPlot, LinePlot, BarhPlot, ScatterPlot, KdePlot
  from pandas.plotting._core import PlotAccessor
  from pandas.plotting._matplotlib.core import MPLPlot
  from pyspark.pandas.plot import TopNPlotBase, SampledPlotBase, HistogramPlotBase, BoxPlotBase, unsupported_function, KdePlotBase
label_desc: Use image node_id 4 for calling the PandasOnSparkKdePlot obj's underlying member method code with example usage: obj._plot(cls, ax, y, style, bw_method, ind, column_num, stacking_id) and returns: lines