import java.util.Collections;
import java.util.List;
import org.apache.log4j.Logger;</BUG>
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
<BUG>import org.eclipse.core.runtime.Assert;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.util.EcoreUtil;</BUG>
import org.eclipse.jface.text.IRegion;

package org.eclipse.xtext.ui.common.editor.hyperlinking;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.jface.text.IRegion;
