code: def get_existing_tables():
      connection = op.get_bind()
      inspector = sa.inspect(connection)
      return inspector.get_table_names()
  
imports: from alembic import op
  import sqlalchemy
  from mlflow.store.model_registry.dbmodels.models import SqlRegisteredModelAlias
label_desc: Use image node_id 1 for calling a global function with example usage: get_existing_tables() and returns: inspector