code: def _currently_registered_run_context_provider_classes():
      return {
          provider.__class__
          for provider in mlflow.tracking.context.registry._run_context_provider_registry
      }
  
file_path: mlflow/tests/tracking/context/test_registry.py
imports: from importlib import reload
  from unittest import mock
  import pytest
  import mlflow.tracking.context.registry
  from mlflow.tracking.context.databricks_job_context import DatabricksJobRunContext
  from mlflow.tracking.context.databricks_notebook_context import DatabricksNotebookRunContext
  from mlflow.tracking.context.databricks_repo_context import DatabricksRepoRunContext
  from mlflow.tracking.context.default_context import DefaultRunContext
  from mlflow.tracking.context.git_context import GitRunContext
  from mlflow.tracking.context.registry import RunContextProviderRegistry, resolve_tags
label_desc: Use image node_id 4 for calling a global function with example usage: _currently_registered_run_context_provider_classes() and returns: unknown