Properties props = new Properties staying null in groovy script

I'm trying to connect to KAFKA via groovy and use a widely popular script However, props is continuously returning null. I have tried both props.setProperty and props.put alike. Neither works, and props stays null of size 0. Script is below:

Properties props = new Properties();
props.setProperty("bootstrap.servers", "localhost:9092")
props.setProperty("group.id", "test")
props.put("enable.auto.commit", "true");
props.put("auto.commit.interval.ms", "1000");
props.put("key.deserializer","org.apache.kafka.common.serialization.StringDeserializer");
props.put("value.deserializer","org.apache.kafka.common.serialization.StringDeserializer");
KafkaConsumer<String, String> consumer = new KafkaConsumer<String, String>(props);