ApiDescription api = it.next();
mustacheDocument.setDescription(Utils.getStrInOption(api.description()));
MustacheApi mustacheApi = new MustacheApi(swaggerDoc.basePath(), api);
for (scala.collection.Iterator<Operation> opIt = api.operations().iterator(); opIt.hasNext(); ) {
Operation op = opIt.next();
MustacheOperation mustacheOperation = null;
mustacheOperation = new MustacheOperation(mustacheDocument, op);
mustacheApi.addOperation(mustacheOperation);
addResponseType(mustacheDocument, mustacheOperation.getResponseClass());