algoliasearch/src/main/java/com/algolia/search/saas/Client.java
protected JSONObject listIndexes(@Nullable RequestOptions requestOptions) throws AlgoliaException {
        return getRequest("/1/indexes/", /* urlParameters: */ null, false, requestOptions);
    }
protected JSONObject listIndexes(@Nullable RequestOptions requestOptions) throws AlgoliaException {
        return getRequest("/1/indexes/", /* urlParameters: */ null, false, requestOptions);
    }
List all existing indexes

@param requestOptions Request-specific options.
@return a JSON Object in the form:
{ "items": [ {"name": "contacts", "createdAt": "2013-01-18T15:33:13.556Z"},
{"name": "notes", "createdAt": "2013-01-18T15:33:13.556Z"}]}