In Elasticsearch < 6.x, you would search through documents of a specific type within the query url like so:
GET index_name/type_name/_search
However, in Elasticsearch 6.x, with the removal of multiple mapping types, the url can only be:
GET index_name/_doc/_search
I have instead specified the type of the document explicitly like so:
"type": "publisher"
There are numerous ways to retrieve documents by specifying what term you want to select, such as filter, match, must... but I don't know which is the equivalent of specifying the type in the url?