int offset = 0;
// Create selector.
SelectorBuilder builder = new SelectorBuilder();
Selector selector = builder
.fields("Id", "Name", "Labels")
// Labels filtering is performed by ID. You can use containsAny to select campaigns with
// any of the label IDs, containsAll to select campaigns with all of the label IDs, or
// containsNone to select campaigns with none of the label IDs.
.containsAny("Labels", labelId.toString())