code: def test_seek(self):
      with self.open(os_helper.TESTFN, self.READMODE) as fp:
          fp.readline()
          pos = fp.tell()
          data = fp.readlines()
          self.assertEqual(data, DATA_SPLIT[1:])
          fp.seek(pos)
          data = fp.readlines()
      self.assertEqual(data, DATA_SPLIT[1:])
  
imports: import io
  import _pyio
  import unittest
  import os
  import sys
  from test.support import os_helper
label_desc: Use image node_id 6 for calling the TestGenericUnivNewlines obj's underlying member method code with example usage: obj.test_seek() without return types