# File lib/gpgme.rb, line 95
    def check_version(options = nil)
      version = nil
      if options.kind_of?(String)
        version = options
      elsif options.include?(:version)
        version = options[:version]
      end
      unless GPGME::gpgme_check_version(version)
        raise Error::InvalidVersion.new
      end
    end