Node Connectivity
There are 5 nodes that can be used as successor
for a node with an output port of type 
Elasticsearch Connection.
NoOp (Generic Port)
A “no operation” node.
Elasticsearch Search
Creates a new Elasticsearch Search to be configured and executed by downstream nodes.
Elasticsearch Reader
Executes a query and fetches resulting data from Elasticsearch.
Elasticsearch Writer
Writes data to Elasticsearch.
Elasticsearch Console
Performs a low-level request against Elasticsearch.