<BUG>import com.liferay.portal.NoSuchSubscriptionException;import com.liferay.portal.kernel.portlet.PortletResponseUtil;</BUG><CONTEXT>import com.liferay.knowledgebase.service.KBCommentServiceUtil;import com.liferay.knowledgebase.service.permission.KBArticlePermission;import com.liferay.knowledgebase.util.ActionKeys;import com.liferay.knowledgebase.util.PortletKeys;import com.liferay.knowledgebase.util.WebKeys;<extra_id_0>import com.liferay.portal.kernel.servlet.SessionErrors;import com.liferay.portal.kernel.servlet.SessionMessages;import com.liferay.portal.kernel.upload.UploadPortletRequest;</CONTEXT>
import com.liferay.portal.kernel.portlet.LiferayPortletConfig;import com.liferay.portal.kernel.portlet.PortletResponseUtil;