Query.newProjectionEntityQueryBuilder() .addProjection("__key__") .setNamespace(NAMESPACE) .setKind(KIND1) .setFilter(PropertyFilter.hasAncestor(ROOT_KEY))
Query.newProjectionEntityQueryBuilder() .addProjection("__key__") .setNamespace(NAMESPACE) .setKind(KIND1) .setFilter(PropertyFilter.hasAncestor(ROOT_KEY))