code: func hasScheme(what string) bool {
  	for _, scheme := range supportedSchemes {
  		if strings.HasPrefix(what, fmt.Sprintf("%s://", scheme)) {
  			return true
  		}
  	}
  
  	return false
  }
docs: // hasScheme returns whether or not a given string (taken to represent a RFC
  // 3986 URL) has a scheme that is supported by the `lfsapi` package.