code: def expect_keyword_(self, keyword):
      self.advance_lexer_()
      if (
          self.cur_token_type_ is Lexer.NAME
          and self.cur_token_ == keyword
      ):
          return self.cur_token_
      raise VoltLibError(
          'Expected "%s"' % keyword, self.cur_token_location_
      )
  
imports: import fontTools.voltLib.ast
  from fontTools.voltLib.lexer import Lexer
  from fontTools.voltLib.error import VoltLibError
  from io import open
label_desc: Use image node_id 30 for calling the Parser obj's underlying member method code with example usage: obj.expect_keyword_(keyword) and returns: self