# File lib/parser/ruby24.rb, line 4991
def _reduce_323(val, _values, result)
                      if in_def?
                        diagnostic :error, :module_in_def, nil, val[0]
                      end

                      result = @builder.def_module(val[0], val[1],
                                                   val[3], val[4])

                      @lexer.pop_cmdarg
                      @static_env.unextend
                    
    result
end