code: def test_multipart_openapi_schema():
      schema = example.openapi_schema()
      assert schema.type == "object"
  
      assert schema.properties
      assert all(arg in schema.properties for arg in ["arg1", "arg2"])
  
file_path: BentoML/tests/unit/_internal/io/test_multipart.py
imports: from __future__ import annotations
  import io
  from typing import TYPE_CHECKING
  import pytest
  from bentoml._internal.utils import LazyLoader
  from bentoml.exceptions import InvalidArgument
  from bentoml.grpc.utils import import_generated_stubs
  from bentoml.io import JSON
  from bentoml.io import Image
  from bentoml.io import Multipart
  from bentoml.io import Text
label_desc: Use image node_id 2 for calling a global function with example usage: test_multipart_openapi_schema() without return types