code: def __len__(self):
      return len(self._records)
  
file_path: icevision/icevision/data/record_collection.py
imports: from __future__ import annotations
  from icevision.imports import *
  from icevision.utils import *
  from icevision.core.record import BaseRecord, autofix_records
  from icevision.data.data_splitter import DataSplitter
label_desc: Use image node_id 8 for calling the RecordCollection obj's underlying member method code with example usage: obj.__len__() and returns: len