code: func (o *ElapseURL) Build() (*url.URL, error) {
  	var _result url.URL
  
  	var _path = "/elapse/{length}"
  
  	length := swag.FormatInt64(o.Length)
  	if length != "" {
  		_path = strings.Replace(_path, "{length}", length, -1)
  	} else {
  		return nil, errors.New("length is required on ElapseURL")
  	}
  
  	_basePath := o._basePath
  	if _basePath == "" {
  		_basePath = "/"
  	}
  	_result.Path = golangswaggerpaths.Join(_basePath, _path)
  
  	return &_result, nil
  }
docs: // Build a url path and query string