* Copyright 2014 dc-square GmbH
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
This callback may never (or rarely) get executed when statistics are disabled or when the callback interval is too high.
Although possible, it is recommended to avoid writing access to the
passed to the
which provides access to general HiveMQ statistics