code: def testCompileForEach(self):
      producer = DummyNode("MyProducer")
      with for_each.ForEach(producer.output("xs")) as x:
          consumer = DummyNode("MyConsumer", inputs={"x": x})
  
      result = self._compile_node_inputs(
          consumer, components=[producer, consumer]
      )
  
      self.assertLen(result.inputs, 2)
      other_input_key = [
          input_key for input_key in result.inputs if input_key != "x"
      ][0]
      graph_id = result.inputs["x"].input_graph_ref.graph_id
      self.assertNotEmpty(graph_id)
      self.assertLen(result.input_graphs, 1)
      for graph_node in result.input_graphs[graph_id].nodes.values():
          if graph_node.WhichOneof("kind") == "op_node":
              self.assertEqual(
                  graph_node.op_node.op_type, "tfx.internal.Unnest"
              )
          elif graph_node.WhichOneof("kind") == "input_node":
              self.assertEqual(
                  graph_node.input_node.input_key, other_input_key
              )
  
imports: from typing import List, Type
  from absl.testing import parameterized
  import tensorflow
  from tfx import types
  from tfx.dsl.compiler import compiler_context
  from tfx.dsl.compiler import node_inputs_compiler
  from tfx.dsl.components.base import base_component
  from tfx.dsl.components.base import base_node
  from tfx.dsl.components.base import executor_spec
  from tfx.dsl.control_flow import for_each
  from tfx.dsl.experimental.conditionals import conditional
  from tfx.dsl.experimental.node_execution_options import utils
  from tfx.dsl.input_resolution import resolver_function
  from tfx.dsl.input_resolution import resolver_op
  from tfx.dsl.placeholder import placeholder
  from tfx.orchestration import pipeline
  from tfx.proto.orchestration import pipeline_pb2
  from tfx.types import channel
  from tfx.types import channel_utils
  from tfx.types import component_spec
  from tfx.types import standard_artifacts
  from google.protobuf import text_format
label_desc: Use image node_id 8 for calling the NodeInputsCompilerTest obj's underlying member method code with example usage: obj.testCompileForEach() without return types