code: def test_basic_tensor(self):
      inputs = constant_op.constant(
          [["Y", "q", "c"], ["Y", "6", "6"], ["p", "G", "a"]]
      )
      segment_ids = constant_op.constant([1, 0, 1])
      num_segments = 2
      separator = ":"
      output_array = constant_op.constant(
          [["Y", "6", "6"], ["Y:p", "q:G", "c:a"]]
      )
  
      res = self.evaluate(
          string_ops.unsorted_segment_join(
              inputs=inputs,
              segment_ids=segment_ids,
              num_segments=num_segments,
              separator=separator,
          )
      )
      self.assertAllEqual(res, output_array)
      self.assertAllEqual(res.shape, output_array.get_shape())
  
imports: from absl.testing import parameterized
  import numpy
  from tensorflow.python.eager import context
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import errors_impl
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import string_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 4 for calling the UnsortedSegmentJoinOpTest obj's underlying member method code with example usage: obj.test_basic_tensor() without return types