Bug 221521 [Markers] New markers API needs to be pared down
We have too much API in some of the new classes and they can be moved to internals
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/MarkerSupportInternalUtilities.java
import org.eclipse.ui.internal.ide.IDEInternalPreferences;
import org.eclipse.ui.internal.ide.IDEInternalWorkbenchImages;
import org.eclipse.ui.internal.ide.IDEWorkbenchPlugin;
import org.eclipse.ui.internal.ide.Policy;
import org.eclipse.ui.internal.util.BundleUtility;
import org.eclipse.ui.statushandlers.StatusAdapter;
import org.eclipse.ui.views.markers.MarkerItem;
import org.eclipse.ui.views.markers.MarkerSupportConstants;
import org.eclipse.ui.views.markers.internal.MarkerGroup;
import org.eclipse.ui.views.markers.internal.MarkerGroupingEntry;
import com.ibm.icu.text.CollationKey;
import com.ibm.icu.text.Collator;
/**
 * MarkerSupportUtilities is the class that maintains constants and
 * functionality used by multiple classes.
 * 
 * @since 3.4
 * 
 */
public class MarkerSupportInternalUtilities {
	static final String ATTRIBUTE_CLASS = "class"; 
	static final CollationKey EMPTY_COLLATION_KEY = Collator.getInstance()
			.getCollationKey(MarkerSupportConstants.EMPTY_STRING);
	static final IMarker[] EMPTY_MARKER_ARRAY = new IMarker[0];
	static final MarkerSupportItem[] EMPTY_MARKER_ITEM_ARRAY = new MarkerSupportItem[0];
	static final IResource[] EMPTY_RESOURCE_ARRAY = new IResource[0];
	static final Object CONTAINS_MODIFIER_TOKEN = new Object();
	static final Object CONTAINS_TEXT_TOKEN = new Object();
	/**
	 * A constant to map migration to the filter being migrated