*/
    lineDataToElements(lineData) {
        return lineData.map(line => {
            let div = document.createElement('div');
            div.innerHTML = `<span ${this._attributes(line)}>${line.value || ''}</span>`;

            return div.firstElementChild;
        });
    }

    /**
     * Helper function for generating attributes string.
     *
     * @param {Object} line - Line data object.