code: def all_combinations():
      return combinations.combine(
          distribution=[
              strategy_combinations.default_strategy,
              strategy_combinations.one_device_strategy,
              strategy_combinations.mirrored_strategy_with_gpu_and_cpu,
              strategy_combinations.mirrored_strategy_with_two_gpus,
          ],
          mode=["graph"],
      )
  
imports: from absl.testing import parameterized
  from tensorflow.python.data.ops import dataset_ops
  from tensorflow.python.distribute import combinations
  from tensorflow.python.distribute import strategy_combinations
  from tensorflow.python.distribute import strategy_test_lib
  from tensorflow.python.eager import test
  from tensorflow.python.framework import ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import metrics
  from tensorflow.python.ops import variables
label_desc: Use image node_id 5 for calling a global function with example usage: all_combinations() and returns: combinations