docs: def clear_database(engine: Connectable, schemas: Iterable[str] = ()) -> None:
      """
      Clear any tables from an existing database.
  
      :param engine: the engine or connection to use
      :param schemas: full list of schema names to expect (ignored for SQLite)
  
      """
      assert check_argument_types()
      metadatas = []
      all_schemas = (None,)  # type: Tuple[Optional[str], ...]
      all_schemas += tuple(schemas)
      for schema in all_schemas:
          # Reflect the schema to get the list of the tables, views and constraints
          metadata = MetaData()
          metadata.reflect(engine, schema=schema, views=True)
          metadatas.append(metadata)
  
      for metadata in metadatas:
          metadata.drop_all(engine, checkfirst=False)