public Builder setUsernameConfKey(String usernameConfKey) {
      this.usernameConfKey = usernameConfKey;
      return this;
    }
@see #addEndpoint(URI)
@deprecated Since 0.99.0. Use {@link #addEndpoint(URI)} instead.
hbase-http/src/main/java/org/apache/hadoop/hbase/http/HttpServer.java