instance method instrument_multi

# File activesupport/lib/active_support/cache.rb, line 1087
        def instrument_multi(operation, keys, options = nil, &block)
          unless silence?
            logger&.debug do
              debug_key = ": #{keys.size} key(s) specified"
              debug_options = " (#{options.inspect})" unless options.blank?
              "Cache #{operation}#{debug_key}#{debug_options}"
            end
          end

          payload = {
            store: self.class.name,
            key: keys
          }
          payload.merge!(options) if options.is_a?(Hash)
          ActiveSupport::Notifications.instrument("cache_#{operation}.active_support", payload) do
            block&.call(payload)
          end
        end