code: def test_to_numpy(self):
      pidx = pd.Index([1, 2, 3, 4])
      psidx = ps.from_pandas(pidx)
  
      self.assert_eq(
          pidx.to_numpy(copy=True), psidx.to_numpy(copy=True)
      )
  
imports: import unittest
  from datetime import datetime
  import pandas
  from pyspark import pandas
  from pyspark.loose_version import LooseVersion
  from pyspark.testing.pandasutils import PandasOnSparkTestCase, SPARK_CONF_ARROW_ENABLED
  from pyspark.testing.sqlutils import SQLTestUtils
label_desc: Use image node_id 13 for calling the ConversionMixin obj's underlying member method code with example usage: obj.test_to_numpy() without return types