* @param universe The id of the universe
* @param mode, merge mode to use
* @return true if call succeeded.
*/
public boolean setMergeMode(int universe, MergeMode mode) {
MergeModeRequest request = MergeModeRequest.newBuilder()
.setUniverse(universe)
.setMergeMode(mode)
.build();
return callRpcMethod("SetMergeMode", request) != null;
}