class << self
        attr_accessor :username, :password, :host_format, :domain_format, :protocol, :port

        def authenticate(username, password)
            @username = username
            @password = password
            self::Base.user = username
            self::Base.password = password
            resources.each do |klass|
                klass.site = klass.site_format % (host_format % [protocol, domain_format % username, ":#{port}"])
            end
        end

        def resources
            @resources ||= []
        end
    end