code: def testEncodeTemplatedExecutorContainerSpec(self):
      specs = executor_specs.TemplatedExecutorContainerSpec(
          image="image",
          command=[
              self._text,
              self._input_value_placeholder,
              self._another_input_value_placeholder,
              self._input_uri_placeholder,
              self._output_uri_placeholder,
              self._concat_placeholder,
          ],
      )
      encode_result = specs.encode(
          component_spec=TestComponentSpec(
              input_artifact=channel.Channel(
                  type=standard_artifacts.Examples
              ),
              output_artifact=channel.Channel(
                  type=standard_artifacts.Model
              ),
              input_parameter=42,
          )
      )
      self.assertProtoEquals(
          """
        image: "image"
        commands {
          value {
            string_value: "text"
          }
        }
        commands {
          operator {
            artifact_value_op {
              expression {
                operator {
                  index_op {
                    expression {
                      placeholder {
                        key: "input_artifact"
                      }
                    }
                  }
                }
              }
            }
          }
        }
        commands {
          placeholder {
            type: EXEC_PROPERTY
            key: "input_parameter"
          }
        }
        commands {
          operator {
            artifact_uri_op {
              expression {
                operator {
                  index_op {
                    expression {
                      placeholder {
                        key: "input_artifact"
                      }
                    }
                    index: 0
                  }
                }
              }
            }
          }
        }
        commands {
          operator {
            artifact_uri_op {
              expression {
                operator {
                  index_op {
                    expression {
                      placeholder {
                        type: OUTPUT_ARTIFACT
                        key: "output_artifact"
                      }
                    }
                    index: 0
                  }
                }
              }
            }
          }
        }
        commands {
          operator {
            concat_op {
              expressions {
                value {
                  string_value: "text"
                }
              }
              expressions {
                operator {
                  artifact_value_op {
                    expression {
                      operator {
                        index_op {
                          expression {
                            placeholder {
                              key: "input_artifact"
                            }
                          }
                          index: 0
                        }
                      }
                    }
                  }
                }
              }
              expressions {
                operator {
                  artifact_uri_op {
                    expression {
                      operator {
                        index_op {
                          expression {
                            placeholder {
                              key: "input_artifact"
                            }
                          }
                          index: 0
                        }
                      }
                    }
                  }
                }
              }
              expressions {
                operator {
                  artifact_uri_op {
                    expression {
                      operator {
                        index_op {
                          expression {
                            placeholder {
                              type: OUTPUT_ARTIFACT
                              key: "output_artifact"
                            }
                          }
                          index: 0
                        }
                      }
                    }
                  }
                }
              }
            }
          }
        }""",
          encode_result,
      )
  
file_path: tfx/tfx/dsl/component/experimental/executor_specs_test.py
imports: import tensorflow
  from tfx import types
  from tfx.dsl.component.experimental import executor_specs
  from tfx.dsl.component.experimental import placeholders
  from tfx.types import channel
  from tfx.types import component_spec
  from tfx.types import standard_artifacts
label_desc: Use image node_id 2 for calling the ExecutorSpecsTest obj's underlying member method code with example usage: obj.testEncodeTemplatedExecutorContainerSpec() without return types