code: func Get(ctx context.Context, section string, out interface{}) error {
  	_, err := Lookup(ctx, section, out)
  	return err
  }
docs: // Get retrieves the current section from the current LUCI_CONTEXT, and
  // deserializes it into out. Out may be any target for json.Unmarshal. If the
  // section exists, it deserializes it into the provided out object. If not, then
  // out is unmodified.