code: def schema_id(origin_did: str, name: str, version: str) -> str:
      
  
      return '{}:2:{}:{}'.format(origin_did, name, version)
docs: Return schema identifier for input origin DID, schema name, and schema version.
  
      :param origin_did: DID of schema originator
      :param name: schema name
      :param version: schema version
      :return: schema identifier