code: func (c *ACLCaches) GetIdentity(id string) *IdentityCacheEntry {
  	if c == nil || c.identities == nil {
  		return nil
  	}
  
  	if raw, ok := c.identities.Get(id); ok {
  		return raw.(*IdentityCacheEntry)
  	}
  
  	return nil
  }
docs: // GetIdentity fetches an identity from the cache and returns it