code: def test_bound_crs__example():
      proj_crs = ProjectedCRS(
          conversion=TransverseMercatorConversion(
              latitude_natural_origin=0,
              longitude_natural_origin=15,
              false_easting=2520000,
              false_northing=0,
              scale_factor_natural_origin=0.9996,
          ),
          geodetic_crs=GeographicCRS(
              datum=CustomDatum(
                  ellipsoid="International 1924 (Hayford 1909, 1910)"
              )
          ),
      )
      bound_crs = BoundCRS(
          source_crs=proj_crs,
          target_crs="WGS 84",
          transformation=ToWGS84Transformation(
              proj_crs.geodetic_crs,
              -122.74,
              -34.27,
              -22.83,
              -1.884,
              -3.4,
              -3.03,
              -15.62,
          ),
      )
      with pytest.warns(UserWarning):
          assert bound_crs.to_dict() == {
              "ellps": "intl",
              "k": 0.9996,
              "lat_0": 0,
              "lon_0": 15,
              "no_defs": None,
              "proj": "tmerc",
              "towgs84": [
                  -122.74,
                  -34.27,
                  -22.83,
                  -1.884,
                  -3.4,
                  -3.03,
                  -15.62,
              ],
              "type": "crs",
              "units": "m",
              "x_0": 2520000,
              "y_0": 0,
          }
  
imports: import pytest
  from pyproj.crs import CRS, BoundCRS, CompoundCRS, CustomConstructorCRS, DerivedGeographicCRS, GeocentricCRS, GeographicCRS, ProjectedCRS, VerticalCRS
  from pyproj.crs.coordinate_operation import AlbersEqualAreaConversion, LambertConformalConic2SPConversion, RotatedLatitudeLongitudeConversion, ToWGS84Transformation, TransverseMercatorConversion, UTMConversion
  from pyproj.crs.coordinate_system import Cartesian2DCS, Ellipsoidal3DCS, VerticalCS
  from pyproj.crs.datum import CustomDatum
  from pyproj.crs.enums import VerticalCSAxis
  from pyproj.exceptions import CRSError
  from test.conftest import PROJ_GTE_901, assert_can_pickle
label_desc: Use image node_id 17 for calling a global function with example usage: test_bound_crs__example() without return types