import com.liferay.portal.security.auth.PrincipalException;
import com.liferay.portal.security.permission.ActionKeys;
import com.liferay.portal.service.ServiceContext;
import com.liferay.portal.service.ServiceContextFactory;
import com.liferay.portal.theme.ThemeDisplay;
<BUG>import com.liferay.portal.util.PortalUtil;
import com.liferay.portlet.asset.AssetCategoryException;</BUG>
import com.liferay.portlet.asset.AssetTagException;
import com.liferay.portlet.documentlibrary.DuplicateFileException;
import com.liferay.portlet.documentlibrary.FileNameException;

import com.liferay.portal.security.auth.PrincipalException;
import com.liferay.portal.security.permission.ActionKeys;
import com.liferay.portal.service.ServiceContext;
import com.liferay.portal.service.ServiceContextFactory;
import com.liferay.portal.theme.ThemeDisplay;
import com.liferay.portal.util.PortalUtil;
import com.liferay.portlet.PortletURLFactoryUtil;
import com.liferay.portlet.asset.AssetCategoryException;
import com.liferay.portlet.asset.AssetTagException;
import com.liferay.portlet.documentlibrary.DuplicateFileException;
import com.liferay.portlet.documentlibrary.FileNameException;
