code: def default_processor(self):
      return (
          OneFormerProcessor.from_pretrained(self.model_checkpoints)
          if is_vision_available()
          else None
      )
  
imports: import copy
  import inspect
  import unittest
  import numpy
  from tests.test_modeling_common import floats_tensor
  from transformers import OneFormerConfig, is_torch_available, is_vision_available
  from transformers.testing_utils import require_torch, require_torch_accelerator, require_torch_fp16, require_torch_multi_gpu, require_vision, slow, torch_device
  from transformers.utils import cached_property
  from ...test_configuration_common import ConfigTester
  from ...test_modeling_common import ModelTesterMixin
  from ...test_pipeline_mixin import PipelineTesterMixin
label_desc: Use image node_id 2 for calling the OneFormerModelIntegrationTest obj's underlying member method code with example usage: obj.default_processor() and returns: unknown