save_block_result_to_cache

# File activesupport/lib/active_support/cache.rb, line 1116
        def save_block_result_to_cache(name, key, options)
          options = options.dup

          result = instrument(:generate, key, options) do
            yield(name, WriteOptions.new(options))
          end

          write(name, result, options) unless result.nil? && options[:skip_nil]
          result
        end