* @param externalIds the historical time-series key identifiers to add, not null
*/
public void addExternalIds(Iterable<ExternalId> externalIds) {
ArgumentChecker.notNull(externalIds, "externalIds");
if (getExternalIdSearch() == null) {
setExternalIdSearch(new ExternalIdSearch(externalIds));
} else {
getExternalIdSearch().addExternalIds(externalIds);
}
}