do {
try {
final OChannelBinaryClient network = beginRequest(OChannelBinaryProtocol.REQUEST_DATACLUSTER_COUNT);
try {
network.writeShort((short) iClusterIds.length);
for (int i = 0; i < iClusterIds.length; ++i)
network.writeShort((short) iClusterIds[i]);
} finally {
endRequest(network);
}