_makeIconClassName(iconType, isSubmenu) {
    const iconStyleInfo = isSubmenu ? this.getStyle('submenu.icon') : this.getStyle('menu.icon');
    const { path, name } = iconStyleInfo[iconType];

    return path && name ? iconType : `${iconType} use-default`;
  }
Make className for svg icon
@param {string} iconType - normal' or 'active' or 'hover' or 'disabled
@param {boolean} isSubmenu - submenu icon or not.
@returns {string}
@private