code: def test_geoaxes_set_boundary_clipping():
      """Test that setting the boundary works properly for clipping #1620."""
      lon, lat = np.meshgrid(
          np.linspace(-180.0, 180.0, 361), np.linspace(-90.0, -60.0, 31)
      )
      fig = plt.figure()
      ax1 = fig.add_subplot(1, 1, 1, projection=ccrs.SouthPolarStereo())
  
      # Limit the map to -60 degrees latitude and below.
      ax1.set_extent([-180, 180, -90, -60], ccrs.PlateCarree())
      ax1.gridlines()
  
      ax1.contourf(lon, lat, lat, transform=ccrs.PlateCarree())
  
      ax1.set_boundary(
          mpath.Path.circle(center=(0.5, 0.5), radius=0.5),
          transform=ax1.transAxes,
      )
  
      return fig
  
imports: from unittest import mock
  import matplotlib.path
  import matplotlib.pyplot
  import numpy
  import pytest
  import cartopy.crs
  import cartopy.feature
  from cartopy.mpl.geoaxes import GeoAxes, GeoAxesSubplot, InterProjectionTransform
label_desc: Use image node_id 4 for calling a global function with example usage: test_geoaxes_set_boundary_clipping() and returns: fig