code: def testHasTaskDependency(self):
      example_gen = CsvExampleGen(input_base="data_path")
      statistics_gen = StatisticsGen(
          examples=example_gen.outputs["examples"]
      )
      p1 = pipeline.Pipeline(
          pipeline_name="fake_name",
          pipeline_root="fake_root",
          components=[example_gen, statistics_gen],
      )
      self.assertFalse(compiler_utils.has_task_dependency(p1))
  
      a = EmptyComponent(name="a").with_id("a")
      statistics_gen.add_downstream_node(a)
      p2 = pipeline.Pipeline(
          pipeline_name="fake_name",
          pipeline_root="fake_root",
          components=[example_gen, statistics_gen, a],
      )
      self.assertTrue(compiler_utils.has_task_dependency(p2))
  
imports: import itertools
  import tensorflow
  from tfx import types
  from tfx.components import CsvExampleGen
  from tfx.components import StatisticsGen
  from tfx.dsl.compiler import compiler_utils
  from tfx.dsl.components.base import base_component
  from tfx.dsl.components.base import base_executor
  from tfx.dsl.components.base import executor_spec
  from tfx.dsl.components.common import importer
  from tfx.dsl.components.common import resolver
  from tfx.dsl.input_resolution.strategies import latest_blessed_model_strategy
  from tfx.dsl.placeholder import placeholder
  from tfx.orchestration import pipeline
  from tfx.proto.orchestration import pipeline_pb2
  from tfx.types import standard_artifacts
  from tfx.types.artifact import Artifact
  from tfx.types.artifact import Property
  from tfx.types.artifact import PropertyType
  from tfx.types.channel import Channel
  from tfx.types.channel import OutputChannel
  from tfx.types.channel_utils import external_pipeline_artifact_query
  from google.protobuf import text_format
  from ml_metadata.proto import metadata_store_pb2
label_desc: Use image node_id 8 for calling the CompilerUtilsTest obj's underlying member method code with example usage: obj.testHasTaskDependency() without return types