class_docstr: OneCommon teacher that loads the data from https://github.com/Alab-NII/Reference-
  Resolution.
class_docstr_tok: ["OneCommon","teacher","that","loads","the","data","from","https",":","\/\/github.com\/Alab-NII\/Reference-","Resolution","."]
code: def num_episodes(self):
      return len(self.episodes)
  
file_path: ParlAI/parlai/tasks/onecommon/agents.py
imports: from parlai.core.teachers import FixedDialogTeacher
  from parlai.utils.io import PathManager
  from .build import build
  import os
label_desc: Use image node_id 4 for calling the OneCommonTeacher obj's underlying member method code with example usage: obj.num_episodes() and returns: len