class_docstr: Dataset for Flickr Annotations
class_docstr_tok: ["Dataset","for","Flickr","Annotations"]
code: def __getitem__(self, idx):
      return self.data[idx]
  
file_path: mmf/mmf/datasets/builders/retrieval/datasets.py
imports: import json
  import pandas
  import torch
  from mmf.utils.file_io import PathManager
label_desc: Use image node_id 4 for calling the CaptionsDatabase obj's underlying member method code with example usage: obj.__getitem__(idx) and returns: self