api/java/src/main/java/com/navercorp/redis/cluster/BinaryRedisClusterClient.java
private byte[][] joinParameters(byte[] first, byte[][] rest) {
        byte[][] result = new byte[rest.length + 1][];
        result[0] = first;
        for (int i = 0; i < rest.length; i++) {
            result[i + 1] = rest[i];
        }
        return result;
    }
private byte[][] joinParameters(byte[] first, byte[][] rest) {
        byte[][] result = new byte[rest.length + 1][];
        result[0] = first;
        for (int i = 0; i < rest.length; i++) {
            result[i + 1] = rest[i];
        }
        return result;
    }
Join parameters.

@param first the first
@param rest  the rest
@return the byte[][]