docstr: Initialize dataset field blobs by creating an empty record
docstr_tok: ["Initialize","dataset","field","blobs","by","creating","an","empty","record"]
code: def _init_field_blobs_as_empty(self, init_net):
      """Initialize dataset field blobs by creating an empty record"""
      with core.NameScope(self.name):
          self.ds.init_empty(init_net)
  
file_path: pytorch/caffe2/python/db_file_reader.py
imports: from caffe2.python import core, scope, workspace, _import_c_extension
  from caffe2.python.dataio import Reader
  from caffe2.python.dataset import Dataset
  from caffe2.python.schema import from_column_list
  import os
label_desc: Use image node_id 6 for calling the DBFileReader obj's underlying member method code with example usage: obj._init_field_blobs_as_empty(init_net) without return types