code: def special_tokens(self):
      return {
          Module.CONTEXTUAL_KNOWLEDGE.message_name(): (
              CONST.BEGIN_ENTITY,
              CONST.END_ENTITY,
          ),
          Module.MEMORY_KNOWLEDGE.message_name(): (
              CONST.BEGIN_MEMORY,
              CONST.END_MEMORY,
          ),
          Module.SEARCH_KNOWLEDGE.message_name(): (
              CONST.TOKEN_KNOWLEDGE,
              CONST.TOKEN_END_KNOWLEDGE,
          ),
      }[self.tag_to_agent()[self.value]]
  
imports: from enum import Enum
  from typing import Dict, List
  import projects.bb3.constants
label_desc: Use image node_id 16 for calling the Module obj's underlying member method code with example usage: obj.special_tokens() and returns: dict