code: def test_multiple_segment_join(self):
      inputs = [["Y", "q", "c"], ["Y", "6", "6"], ["p", "G", "a"]]
      segment_ids_1 = [1, 0, 1]
      num_segments_1 = 2
      separator_1 = ":"
      output_array_1 = [["Y", "6", "6"], ["Y:p", "q:G", "c:a"]]
  
      res = self.evaluate(
          string_ops.unsorted_segment_join(
              inputs=inputs,
              segment_ids=segment_ids_1,
              num_segments=num_segments_1,
              separator=separator_1,
          )
      )
      self.assertAllEqualUnicode(res, output_array_1)
      self.assertAllEqual(res.shape, np.array(output_array_1).shape)
  
      segment_ids_2 = [1, 1]
      num_segments_2 = 2
      separator_2 = ""
      output_array_2 = [["", "", ""], ["YY:p", "6q:G", "6c:a"]]
  
      res = self.evaluate(
          string_ops.unsorted_segment_join(
              inputs=res,
              segment_ids=segment_ids_2,
              num_segments=num_segments_2,
              separator=separator_2,
          )
      )
      self.assertAllEqualUnicode(res, output_array_2)
      self.assertAllEqual(res.shape, np.array(output_array_2).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 5 for calling the UnsortedSegmentJoinOpTest obj's underlying member method code with example usage: obj.test_multiple_segment_join() without return types