code: func (r Network_ContentDelivery_Account) RemoveAuthenticationDirectory(directory *string, mediaType *string) (resp bool, err error) {
  	params := []interface{}{
  		directory,
  		mediaType,
  	}
  	err = r.Session.DoRequest("SoftLayer_Network_ContentDelivery_Account", "removeAuthenticationDirectory", params, &r.Options, &resp)
  	return
  }
docs: // If you want to turn off the token authentication, use this method to remove a directory from the token authentication directory.