How to use the web3-core-helpers.formatters.outputLogFormatter function in web3-core-helpers

Contract.prototype._decodeEventABI = function (data) {
    var event = this;

    data.data = data.data || '';
    data.topics = data.topics || [];
    var result = formatters.outputLogFormatter(data);

    // if allEvents get the right event
    if(event.name === 'ALLEVENTS') {
        event = event.jsonInterface.find(function (intf) {
            return (intf.signature === data.topics[0]);
        }) || {anonymous: true};
    }

    // create empty inputs if none are present (e.g. anonymous events on allEvents)
    event.inputs = event.inputs || [];


    var argTopics = event.anonymous ? data.topics : data.topics.slice(1);

    result.returnValues = abi.decodeLog(event.inputs, data.data, argTopics);
    delete result.returnValues.__length__;