src/main/java/com/googlecode/objectify/impl/QueryEngine.java
public <T> QueryResults<Key<T>> queryKeysOnly(final KeyQuery query) {
		log.trace("Starting keys-only query");

		return new KeyQueryResults<>(ds.run(query));
	}
public <T> QueryResults<Key<T>> queryKeysOnly(final KeyQuery query) {
		log.trace("Starting keys-only query");

		return new KeyQueryResults<>(ds.run(query));
	}
public < T > QueryResults < Key < T > > queryKeysOnly ( final KeyQuery query ) { log . trace ( "Starting keys-only query" ) ; return new KeyQueryResults <> ( ds . run ( query ) ) ; }
Perform a keys-only query.
Perform a keys - only query .