code: def expected_schema_file():
      current_dir = os.path.dirname(os.path.abspath(__file__))
      return os.path.normpath(
          os.path.join(
              current_dir,
              os.pardir,
              os.pardir,
              "resources",
              "db",
              "latest_schema.sql",
          )
      )
  
imports: import os
  import sqlite3
  import pytest
  import sqlalchemy
  from alembic import command
  from alembic.autogenerate import compare_metadata
  from alembic.migration import MigrationContext
  from alembic.script import ScriptDirectory
  import mlflow.db
  from mlflow.exceptions import MlflowException
  from mlflow.store.db.base_sql_model import Base
  from mlflow.store.db.utils import _get_alembic_config, _verify_schema
  from mlflow.store.tracking.dbmodels.initial_models import Base
  from mlflow.store.tracking.sqlalchemy_store import SqlAlchemyStore
  from tests.integration.utils import invoke_cli_runner
  from tests.store.dump_schema import dump_db_schema
label_desc: Use image node_id 2 for calling a global function with example usage: expected_schema_file() and returns: os