code: def search(self, query: np.ndarray, k: int) -> np.ndarray:
      pass
  
file_path: ludwig/ludwig/vector_index/base.py
imports: from abc import ABC, abstractmethod
  import numpy
label_desc: Use image node_id 1 for calling the VectorIndex obj's underlying member method code with example usage: obj.search(query, k) without return types