# File lib/fog/linode/requests/dns/domain_list.rb, line 26
        def domain_list(domain_id = nil)
          options = {}
          if domain_id
            options.merge!(:domainId => domain_id)
          end

          request(
            :expects  => 200,
            :method   => 'GET',
            :query    => { :api_action => 'domain.list' }.merge!(options)
          )
        end