anchor.diff:  --------------------------------------------------
   input { ... }
   output {
  -  elasticsearch {
  +  elasticsearch_java {
       protocol => "transport"
       ...
       user => ... # string
  
positive.code: 
  [float]
  [[ls-transport-conf]]
  ===== SSL Configuration for Transport or Node protocols
  
  Specify the paths to the keystore and truststore `.jks` files with the following configuration parameters:
  
  
negative.code: [[ls-http]]
  ==== Connecting with HTTP/HTTPS
  
  Logstash communicates with the Elasticsearch cluster through the REST APIs over HTTP.
  
  [float]
  [[ls-http-auth]]
  