in flink-connector-elasticsearch-base/src/main/java/org/apache/flink/connector/elasticsearch/table/RowElasticsearchEmitter.java [54:65]
public RowElasticsearchEmitter(
IndexGenerator indexGenerator,
SerializationSchema<RowData> serializationSchema,
XContentType contentType,
@Nullable String documentType,
Function<RowData, String> createKey) {
this.indexGenerator = checkNotNull(indexGenerator);
this.serializationSchema = checkNotNull(serializationSchema);
this.contentType = checkNotNull(contentType);
this.documentType = documentType;
this.createKey = checkNotNull(createKey);
}