code: def test_epsg(self):
      uk = ccrs.epsg(27700)
      assert uk.epsg_code == 27700
      expected_x = (-104009.357, 688806.007)
      expected_y = (-8908.37, 1256558.45)
      expected_threshold = 7928.15
      if pyproj.__proj_version__ >= "9.2.0":
          expected_x = (-104728.764, 688806.007)
          expected_y = (-8908.36, 1256616.32)
          expected_threshold = 7935.34
      assert_almost_equal(uk.x_limits, expected_x, decimal=3)
      assert_almost_equal(uk.y_limits, expected_y, decimal=2)
      assert_almost_equal(uk.threshold, expected_threshold, decimal=2)
      self._check_osgb(uk)
  
imports: import copy
  from io import BytesIO
  import os
  from pathlib import Path
  import pickle
  import warnings
  import numpy
  from numpy.testing import assert_almost_equal, assert_array_equal
  from numpy.testing import assert_array_almost_equal
  import pyproj
  import pytest
  import shapely.geometry
  import cartopy.crs
label_desc: Use image node_id 5 for calling the TestCRS obj's underlying member method code with example usage: obj.test_epsg() without return types