method_missing

# File activeresource/lib/active_resource/base.rb, line 1456
      def method_missing(method_symbol, *arguments) #:nodoc:
        method_name = method_symbol.to_s

        if method_name =~ /(=|\?)$/
          case $1
          when "="
            attributes[$`] = arguments.first
          when "?"
            attributes[$`]
          end
        else
          return attributes[method_name] if attributes.include?(method_name)
          # not set right now but we know about it
          return nil if known_attributes.include?(method_name)
          super
        end
      end