code: def _get_distance(self, numpy_distance):
      return numpy_distance[0][0]
  
file_path: evadb/evadb/functions/ndarray/similarity.py
imports: import pandas
  from evadb.functions.abstract.abstract_function import AbstractFunction
  from evadb.utils.generic_utils import try_to_import_faiss
label_desc: Use image node_id 1 for calling the Similarity obj's underlying member method code with example usage: obj._get_distance(numpy_distance) and returns: numpy_distance