public org.apache.flink.table.descriptors.Elasticsearch connectionPathPrefix(String pathPrefix) {
		internalProperties.putString(CONNECTOR_CONNECTION_PATH_PREFIX, pathPrefix);
		return this;
	}
Sets connection properties to be used during REST communication to Elasticsearch.

<p>Adds a path prefix to every REST communication.

@param pathPrefix prefix string to be added to every REST communication
elasticsearch5-xh/elasticsearch5-xh-sink/src/main/java/org/apache/flink/table/descriptors/Elasticsearch.java