code: func (b *BigIP) GetKey(name string) (*Key, error) {
  	var key Key
  	err, ok := b.getForEntity(&key, uriSys, uriFile, uriSslKey, name)
  	if err != nil {
  		return nil, err
  	}
  	if !ok {
  		return nil, nil
  	}
  
  	return &key, nil
  }
docs: // GetKey retrieves a key by name. Returns nil if the key does not exist.