# File lib/rumai/ixp/message.rb, line 341
      def self.from_9p aStream
        size = aStream.read_9p(4)
        type = aStream.read_9p(1)

        unless fcall = TYPE_TO_CLASS[type]
          raise Error, "illegal fcall type: #{type}"
        end

        __from_9p__ aStream, fcall
      end