public void addUnprivilegedServlet(String name, String pathSpec, ServletHolder holder) {
    if (name != null) {
      holder.setName(name);
    }
    this.httpServer.addUnprivilegedServlet(pathSpec, holder);
  }
Adds a servlet in the server that any user can access.
@see HttpServer#addUnprivilegedServlet(String, ServletHolder)
hbase-http/src/main/java/org/apache/hadoop/hbase/http/InfoServer.java