in jdbc-grpc-client/src/main/java/org/apache/kyuubi/grpc/client/SimpleBlockingJdbcClient.java [120:127]
public DirectStatusResp setHoldability(String connectionId, int holdability) {
SetHoldabilityReq.Builder builder = SetHoldabilityReq.newBuilder();
SetHoldabilityReq req = builder
.setConnectionId(ConnectionHandle.newBuilder().setId(connectionId).build())
.setHoldability(holdability)
.build();
return connectionBlockingStub.setHoldability(req);
}