class_docstr: Use mlflow to implement Experiment.
class_docstr_tok: ["Use","mlflow","to","implement","Experiment","."]
code: def end(self, recorder_status=Recorder.STATUS_S):
      if self.active_recorder is not None:
          self.active_recorder.end_run(recorder_status)
          self.active_recorder = None
  
imports: from typing import Dict, List, Union
  from qlib.typehint import Literal
  import mlflow
  from mlflow.entities import ViewType
  from mlflow.exceptions import MlflowException
  from .recorder import Recorder, MLflowRecorder
  from ..log import get_module_logger
label_desc: Use image node_id 4 for calling the MLflowExperiment obj's underlying member method code with example usage: obj.end(recorder_status) without return types