code: def test_get_time(self):
      result = self.utils.get_time(to_string=True)
      self.assertIsInstance(result, str)
  
      result = self.utils.get_time("NZSX", to_string=True)
      self.assertTrue("NZSX" in result)
      self.assertIsInstance(result, str)
  
      result = self.utils.get_time("SSE", to_string=True)
      self.assertIsInstance(result, str)
      self.assertTrue("SSE" in result)
  
imports: from .config import sample_data
  from .context import pandas_ta
  from unittest import skip, TestCase
  from unittest.mock import patch
  import numpy
  import numpy.testing
  from pandas import DataFrame, Series
  from pandas.api.types import is_datetime64_ns_dtype, is_datetime64tz_dtype
label_desc: Use image node_id 21 for calling the TestUtilities obj's underlying member method code with example usage: obj.test_get_time() without return types