handlePageSizeChange = size => {
        let query = Object.assign({}, this.state.productConfigsQuery);
        query.size = size;
        this.loadData(query);
    };


    loadData = (query) => {
        axios.post('/api/availableProducts/find', query).then(response => {
            this.setState({
                productConfigs: response.data,
                productConfigsQuery: query
            });
        });
    }