Reference information

Elastic, which is the company that makes ElasticSearch, has an API as well as user documentation that can give you more background on the fields in this step.

• ElasticSearch reference information can be found here: https://www.elastic.co/guide/en/ElasticSearch/reference/current/index.html.
• The Bulk API is here: https://www.elastic.co/guide/en/ElasticSearch/reference/current/docs-bulk.html.