code: def __init__(self, name, path_dict):
      super().__init__(name=name, path_dict=path_dict)
      self.mlm_probability = None
      self.do_mask = False
  
imports: from dataclasses import dataclass
  from typing import List
  import jiant.utils.python.io
  from jiant.tasks.core import Task, TaskTypes, BaseExample
  from jiant.tasks.utils import ExclusiveSpan
  from .templates import mlm_premasked
label_desc: Use image node_id 1 to create a new MLMPremaskedTask object from inherited base classes: Task with example: obj = MLMPremaskedTask(name, path_dict)