// ensure compatibility with Xml
$attrs['class'] = implode( ' ', $attrs['class'] );
} else {
$attrs['class'] .= ' mw-ui-button ' . implode( ' ', $modifiers );
}
} else {
// ensure compatibility with Xml
$attrs['class'] = implode( ' ', $attrs['class'] );
} else {
$attrs['class'] .= ' mw-ui-button ' . implode( ' ', $modifiers );
}
} else {