flink-connector-elasticsearch-base/src/main/java/org/apache/flink/streaming/connectors/elasticsearch/table/IndexGeneratorFactory.java (1 line):
	- line 140: // TODO we can possibly optimize it to use the nullability of the field


flink-connector-elasticsearch-base/src/main/java/org/apache/flink/connector/elasticsearch/table/IndexGeneratorFactory.java (1 line):
	- line 143: // TODO we can possibly optimize it to use the nullability of the field