code: def newTrackingServiceClient():
      return TrackingServiceClient("databricks://scope:key")
  
imports: from unittest import mock
  import pytest
  from mlflow.entities import Run, RunInfo
  from mlflow.tracking._tracking_service.client import TrackingServiceClient
label_desc: Use image node_id 2 for calling a global function with example usage: newTrackingServiceClient() and returns: TrackingServiceClient