code: def run_migrations_online() -> None:
      """Run migrations in 'online' mode.
  
      In this scenario we need to create an Engine
      and associate a connection with the context.
  
      """
      connectable = engine_from_config(
          config.get_section(config.config_ini_section, {}),
          prefix="sqlalchemy.",
          poolclass=pool.NullPool,
      )
  
      with connectable.connect() as connection:
          context.configure(
              connection=connection, target_metadata=target_metadata
          )
  
          with context.begin_transaction():
              context.run_migrations()
  
imports: from logging.config import fileConfig
  from alembic import context
  from sqlalchemy import engine_from_config, pool
  from mlflow.server.auth.db.models import Base
label_desc: Use image node_id 2 for calling a global function with example usage: run_migrations_online() without return types