code: def tricontourf(ax, *args, **kwargs):
      if not ax._hold:
          ax.cla()
      kwargs["filled"] = True
      return TriContourSet(ax, *args, **kwargs)
  
file_path: catboost/contrib/python/matplotlib/py2/matplotlib/tri/tricontour.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import six
  from matplotlib.contour import ContourSet
  from matplotlib.tri.triangulation import Triangulation
  import matplotlib._tri
  import numpy
label_desc: Use image node_id 2 for calling a global function with example usage: tricontourf(ax) and returns: TriContourSet