code: def get_index(cls, index_type):
      index_class = cls.get_index_class(index_type)
      index = index_class()
      return index
  
imports: from .indexes import FaissBaseIndex, FaissParallelAddIndex
label_desc: Use image node_id 2 for calling the IndexFactory obj's underlying member method code with example usage: obj.get_index(cls, index_type) and returns: index