code: func Check(d *certdata.Data) *errors.Errors {
  	var e = errors.New(nil)
  	for _, ext := range d.Cert.Extensions {
  		// Check for any imported extensions and run all matching
  		e.Append(checks.Extensions.Check(ext, d))
  	}
  	return e
  }
docs: // Check performs a strict verification on the extension according to the standard(s)