# File lib/webmock/callback_registry.rb, line 13
    def self.invoke_callbacks(options, request_signature, response)
      return if @@callbacks.empty?
      CallbackRegistry.callbacks.each do |callback|
        except = callback[:options][:except]
        real_only = callback[:options][:real_requests_only]
        unless except && except.include?(options[:lib])
          if !real_only || options[:real_request]
            callback[:block].call(request_signature, response)
          end
        end
      end
    end