class_docstr: abstract class
class_docstr_tok: ["abstract","class"]
docstr: generate one example
docstr_tok: ["generate","one","example"]
code: def generate_data(self):
      """generate one example"""
      raise NotImplementedError()
  
file_path: delta/delta/data/task/base_task.py
imports: import abc
label_desc: Use image node_id 3 for calling the Task obj's underlying member method code with example usage: obj.generate_data() without return types