code: def test_add_points_batch5(self):
      positions = nmslib.addDataPointBatch(
          self.index,
          np.array([0, 1, 2], dtype=np.int32),
          ["string1", "string2", "string3"],
      )
      nt.assert_array_equal(
          np.array([0, 1, 2], dtype=np.int32), positions
      )
  
imports: import unittest
  import numpy.testing
  import os
  import numpy
  import nmslib
label_desc: Use image node_id 5 for calling the StringTests1 obj's underlying member method code with example usage: obj.test_add_points_batch5() without return types