_changeToObject(styleOptions) {
    const styleObject = {};
    forEach(styleOptions, (value, key) => {
      const keyExplode = key.match(/^(.+)\.([a-z]+)$/i);
      const [, property, subProperty] = keyExplode;

      if (!styleObject[property]) {
        styleObject[property] = {};
      }
      styleObject[property][subProperty] = value;
    });

    return styleObject;
  }
Change to low dimensional object.
@param {object} styleOptions - style object of user interface
@returns {object} low level object for style apply
@private