class_docstr: Args:
      tokenizer (:obj:`PreTrainedTokenizer`): A tokenizer to appoint the vocabulary and the tokenization strategy.
      text (:obj:`Optional[List[str]]`, optional): manual template format. Defaults to None.
      placeholder_mapping (:obj:`dict`): A place holder to represent the original input text. Default to ``{'<text_a>': 'text_a', '<text_b>': 'text_b'}``
docstr: when template text was set
  
  1. parse text
code: def on_text_set(self):
      """
      when template text was set
  
      1. parse text
      """
  
      self.text = self.parse_text(self.text)
  
file_path: OpenPrompt/openprompt/prompts/manual_template.py
imports: from openprompt.utils.logging import logger
  from openprompt.data_utils import InputExample, InputFeatures
  from typing import *
  from transformers.tokenization_utils import PreTrainedTokenizer
  from openprompt import Template
label_desc: Use image node_id 2 for calling the ManualTemplate obj's underlying member method code with example usage: obj.on_text_set() without return types