in jdbc-grpc-client/src/main/java/org/apache/kyuubi/grpc/client/SimpleBlockingJdbcClient.java [20:24]
public SimpleBlockingJdbcClient(Channel channel) {
blockingStub = JdbcGrpc.newBlockingStub(channel);
connectionBlockingStub = ConnectionGrpc.newBlockingStub(channel);
statementBlockingStub = StatementGrpc.newBlockingStub(channel);
}