import java.util.Collection;</BUG>
import java.util.Iterator;
import java.util.List;
import java.util.Map;
<BUG>import org.eclipse.core.resources.IMarker;
import org.eclipse.core.runtime.IProgressMonitor;</BUG>
import org.eclipse.emf.ecore.EValidator;
import org.eclipse.jface.text.Position;
import org.eclipse.jface.text.source.Annotation;
import org.eclipse.jface.text.source.IAnnotationModel;

package org.eclipse.xtext.ui.core.editor.validation;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.eclipse.core.resources.IMarker;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.emf.ecore.EValidator;
import org.eclipse.jface.text.Position;
import org.eclipse.jface.text.source.Annotation;
import org.eclipse.jface.text.source.IAnnotationModel;
