code: def setup_method(self, test_method):
      with Session(engine) as session:
          session.query(Item).delete()
          session.commit()
  
imports: import numpy
  from pgvector.sqlalchemy import Vector
  import pytest
  from sqlalchemy import create_engine, inspect, select, text, MetaData, Table, Column, Index, Integer
  from sqlalchemy.exc import StatementError
  from sqlalchemy.ext.asyncio import async_sessionmaker, create_async_engine
  from sqlalchemy.orm import declarative_base, mapped_column, Session
  from sqlalchemy.sql import func
label_desc: Use image node_id 1 for calling the TestSqlalchemy obj's underlying member method code with example usage: obj.setup_method(test_method) without return types