normalize_options

# File activesupport/lib/active_support/cache.rb, line 691
        def normalize_options(options)
          options = options.dup
          OPTION_ALIASES.each do |canonical_name, aliases|
            alias_key = aliases.detect { |key| options.key?(key) }
            options[canonical_name] ||= options[alias_key] if alias_key
            options.except!(*aliases)
          end

          options
        end