code: def testCollectiveReduceMinimum(self):
      # Tests that execute collectives need to be enclosed in graph or tf.function
      with ops.Graph().as_default():
          self._testCollectiveReduce(
              inputs=[
                  [1.0, 20.0, 3.0, 40.0, 5.0],
                  [10.0, 2.0, 30.0, 4.0, 50.0],
              ],
              expected=[1.0, 2.0, 3.0, 4.0, 5.0],
              set_graph_key=True,
              instance_key=40,
              merge_op="Min",
              final_op="Id",
          )
  
imports: import time
  from tensorflow.core.protobuf import config_pb2
  from tensorflow.core.protobuf import rewriter_config_pb2
  from tensorflow.python.eager import context
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import config
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import kernels
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import collective_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import variable_v1
  from tensorflow.python.ops import variables
  from tensorflow.python.ops import while_loop
  from tensorflow.python.platform import test
  from tensorflow.python.platform import tf_logging
label_desc: Use image node_id 16 for calling the CollectiveOpTest obj's underlying member method code with example usage: obj.testCollectiveReduceMinimum() without return types