code: def test_bar_plot_limited(self):
      pdf = self.pdf2
      psdf = self.psdf2
  
      _, ax1 = plt.subplots(1, 1)
      ax1 = pdf["id"][:1000].plot.bar(colormap="Paired")
      ax1.text(
          1,
          1,
          "showing top 1000 elements only",
          size=6,
          ha="right",
          va="bottom",
          transform=ax1.transAxes,
      )
      bin1 = self.plot_to_base64(ax1)
  
      _, ax2 = plt.subplots(1, 1)
      ax2 = psdf["id"].plot.bar(colormap="Paired")
      bin2 = self.plot_to_base64(ax2)
  
      self.assertEqual(bin1, bin2)
  
imports: import base64
  from io import BytesIO
  import unittest
  import numpy
  import pandas
  from pyspark import pandas
  from pyspark.pandas.config import set_option, reset_option
  from pyspark.testing.pandasutils import have_matplotlib, matplotlib_requirement_message, PandasOnSparkTestCase, TestUtils
label_desc: Use image node_id 9 for calling the SeriesPlotMatplotlibTestsMixin obj's underlying member method code with example usage: obj.test_bar_plot_limited() without return types