code: def read_all(self, run):
      return self._data.get(run.id)
  
imports: import logging
  import os
  import sqlite3
  from guild import run_util
  from guild import tfevent
  from guild import util
  from guild import var
label_desc: Use image node_id 4 for calling the AttrReader obj's underlying member method code with example usage: obj.read_all(run) and returns: self