def version
      logger.debug "Parsing version from output using #{description}"
      matches = output.match PARSE_VERSION_FROM_OUTPUT
      raise InvalidFormat.new output if matches.nil?
      matches.captures[0]
    end
def version
      logger.debug "Parsing version from output using #{description}"
      matches = output.match PARSE_VERSION_FROM_OUTPUT
      raise InvalidFormat.new output if matches.nil?
      matches.captures[0]
    end
Determines the version of Vagrant based on the output