# File lib/genome-lib/lib.rb, line 275
      def create_machine(system_id, email, repo)
        if not repo.is_a? GenomeLib::Appliances::Genome
          raise ArgumentError, "repo parameter must be of type GenomeLib::Appliances::Genome"
        end
        return Restr.post("#{@service_url}/koan", :system_id => system_id, :repo => repo.fqdn, :email => email)
      end