code: def schema(self) -> Schema:
      return _infer_schema(np.array(self._data_list))
  
file_path: mlflow/tests/resources/data/dataset.py
imports: import base64
  import json
  from typing import Any, Dict, List, Optional
  import numpy
  import pandas
  from mlflow.data.dataset import Dataset
  from mlflow.types import Schema
  from mlflow.types.utils import _infer_schema
  from mlflow.utils import insecure_hash
  from tests.resources.data.dataset_source import TestDatasetSource
label_desc: Use image node_id 7 for calling the TestDataset obj's underlying member method code with example usage: obj.schema() and returns: _infer_schema