# File lib/right_slicehost.rb, line 230
    def list_slices(sls_id=nil)
      # GET /slices.xml
      req    = generate_request(Net::HTTP::Get, build_path(:slices, sls_id))
      result = request_cache_or_info(:list_slices, req, SlicesParser, sls_id.nil?)
      sls_id ? result.first : result
    rescue
      on_exception
    end