private void initApplicationsToCleanup() {
if (this.applicationsToCleanup != null) {
return;
}
HeartbeatResponseProtoOrBuilder p = viaProto ? proto : builder;
List<ApplicationIdProto> list = p.getApplicationsToCleanupList();
this.applicationsToCleanup = new ArrayList<ApplicationId>();
for (ApplicationIdProto c : list) {
this.applicationsToCleanup.add(convertFromProtoFormat(c));
}