public void adminQueryAllMethods(HttpServletRequest req,
            StringBuilder sBuffer) {
        sBuffer.append("{\"result\":true,\"errCode\":0,\"errMsg\":\"Success!\",\"dataSet\":[");
        int totalCnt = getSupportedMethod(sBuffer);
        sBuffer.append("],\"totalCnt\":").append(totalCnt).append("}");
    }
Query all API methods supported by this version.

@param req      request
@param sBuffer  process result
inlong-tubemq/tubemq-server/src/main/java/org/apache/inlong/tubemq/server/broker/web/BrokerAdminServlet.java