class_docstr: Use mlflow to implement ExpManager.
code: def client(self):
      # Please refer to `tests/dependency_tests/test_mlflow.py::MLflowTest::test_creating_client`
      # The test ensure the speed of create a new client
      return mlflow.tracking.MlflowClient(tracking_uri=self.uri)
  
imports: from urllib.parse import urlparse
  import mlflow
  from filelock import FileLock
  from mlflow.exceptions import MlflowException, RESOURCE_ALREADY_EXISTS, ErrorCode
  from mlflow.entities import ViewType
  import os
  from typing import Optional, Text
  from .exp import MLflowExperiment, Experiment
  from ..config import C
  from .recorder import Recorder
  from ..log import get_module_logger
  from ..utils.exceptions import ExpAlreadyExistError
label_desc: Use image node_id 1 for calling the MLflowExpManager obj's underlying member method code with example usage: obj.client() and returns: mlflow