# File lib/sup/util.rb, line 552
    def method_missing meth, *a, &b
      raise "no #{name} instance defined in method call to #{meth}!" unless defined? @instance

      ## if we've been deinstantiated, just drop all calls. this is
      ## useful because threads that might be active during the
      ## cleanup process (e.g. polling) would otherwise have to
      ## special-case every call to a Singleton object
      return nil if @instance.nil?

      @instance.send meth, *a, &b
    end