def respond_to_missing?(sym, include_priv)
      return false if sym.to_sym == :acts_like_date?
      time.respond_to?(sym, include_priv)
    end
def respond_to_missing?(sym, include_priv)
      return false if sym.to_sym == :acts_like_date?
      time.respond_to?(sym, include_priv)
    end
Ensure proxy class responds to all methods that underlying time instance
 responds to.