code: def test_single_geometry(self):
      # A single geometry is acceptable
      proj = ccrs.PlateCarree()
      ax = GeoAxes(plt.figure(), [0, 0, 1, 1], projection=proj)
      ax.add_geometries(next(cfeature.COASTLINE.geometries()), crs=proj)
  
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 2 for calling the Test_Axes_add_geometries obj's underlying member method code with example usage: obj.test_single_geometry() without return types