code: def test_importance_plot_lim(self):
      np.random.seed(1)
      dm = xgb.DMatrix(np.random.randn(100, 100), label=[0, 1] * 50)
      bst = xgb.train({}, dm)
      assert len(bst.get_fscore()) == 71
      ax = xgb.plot_importance(bst)
      assert ax.get_xlim() == (0.0, 11.0)
      assert ax.get_ylim() == (-1.0, 71.0)
  
      ax = xgb.plot_importance(bst, xlim=(0, 5), ylim=(10, 71))
      assert ax.get_xlim() == (0.0, 5.0)
      assert ax.get_ylim() == (10.0, 71.0)
  
file_path: xgboost/tests/python/test_plotting.py
imports: import json
  import numpy
  import pytest
  import xgboost
  from xgboost import testing
label_desc: Use image node_id 2 for calling the TestPlotting obj's underlying member method code with example usage: obj.test_importance_plot_lim() without return types