# File lib/specinfra/command/module/zfs.rb, line 9
        def check_has_property(zfs, property=nil)
          commands = []
          property.sort.each do |key, value|
            regexp = "^#{value}$"
            commands << "zfs list -H -o #{escape(key)} #{escape(zfs)} | grep -- #{escape(regexp)}"
          end
          commands.join(' && ')
        end