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import brightspot.view.core.article.ArticlePageView;
import brightspot.core.tool.DateTimeUtils;
import brightspot.core.page.CurrentPageViewModel;
import com.psddev.cms.view.PageEntryView;
import com.psddev.cms.view.ViewModel;

public class ArticlePageViewModel extends ViewModel<Article> implements ArticlePageView, PageEntryView {

    @CurrentPageViewModel 
    protected PageViewModel page;

    private static final String DATE_FORMAT_KEY = "dateFormat"; 
    private static final String DEFAULT_DATE_FORMAT = "MMMM d, yyyy"; 

    @Override
    public CharSequence getDatePublished() { 
        return DateTimeUtils.format(model.getPublishDate(), ArticlePageView.class, DATE_FORMAT_KEY, page.getSite(), DEFAULT_DATE_FORMAT);
    }

}

• Declares a variable page, and the annotation assigns it the default value PageViewModel class.
• Declares a date format string.
• Retrieves the model's publication date and outputs the date using the configured format string.