code: func (c *ACLCaches) GetAuthorizer(id string) *AuthorizerCacheEntry {
  	if c == nil || c.authorizers == nil {
  		return nil
  	}
  
  	if raw, ok := c.authorizers.Get(id); ok {
  		return raw.(*AuthorizerCacheEntry)
  	}
  
  	return nil
  }
docs: // GetAuthorizer fetches a acl from the cache and returns it