class ActiveSupport::Cache::WriteOptions

def expires_at
  @options[:expires_at]
end

def expires_at=(expires_at)
  @options.delete(:expires_in)
  @options[:expires_at] = expires_at
end

def expires_in
  @options[:expires_in]
end

def expires_in=(expires_in)
  @options.delete(:expires_at)
  @options[:expires_in] = expires_in
end

def initialize(options) # :nodoc:
  @options = options
end

def version
  @options[:version]
end

def version=(version)
  @options[:version] = version
end