code: def run(
      self,
      project_uri,
      entry_point,
      params,
      version,
      backend_config,
      tracking_uri,
      experiment_id,
  ):
      work_dir = fetch_and_validate_project(
          project_uri, version, entry_point, params
      )
      active_run = get_or_create_run(
          None,
          project_uri,
          experiment_id,
          work_dir,
          version,
          entry_point,
          params,
      )
      return DummySubmittedRun(active_run.info.run_id)
  
file_path: mlflow/tests/resources/mlflow-test-plugin/mlflow_test_plugin/dummy_backend.py
imports: from mlflow.entities import RunStatus
  from mlflow.projects.backend.abstract_backend import AbstractBackend
  from mlflow.projects.submitted_run import SubmittedRun
  from mlflow.projects.utils import fetch_and_validate_project, get_or_create_run
label_desc: Use image node_id 1 for calling the PluginDummyProjectBackend obj's underlying member method code with example usage: obj.run(project_uri, entry_point, params, version, backend_config, tracking_uri, experiment_id) and returns: DummySubmittedRun