/** {@inheritDoc} */
@SuppressWarnings({"unchecked"})
@Override
public Map<GridRichNode, Collection<K>> mapKeysToNodes(Collection<? extends K> keys) {
return Collections.singletonMap(ctx.localNode(), (Collection<K>) keys);
}
/** {@inheritDoc} */
@Override
public void setAttribute(Object key, Object val) throws GridException {
A.notNull(key, "key");
setAttributes(Collections.singletonMap(key, val));
}