private void createWorkflowIndex() {
        createIndex(workflowIndexName);
        addTypeMapping(workflowIndexName, WORKFLOW_DOC_TYPE, "/mappings_docType_workflow.json");
    }
Initializes the indexes templates task_log, message and event, and mappings.
es6-persistence/src/main/java/com/netflix/conductor/es6/dao/index/ElasticSearchDAOV6.java