Generate public static EMPTY_ARRAY fields for each object.

editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/TypeHierarchyItem.java

Index: editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/TypeHierarchyItem.java
diff --git a/editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/TypeHierarchyItem.java b/editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/TypeHierarchyItem.java
index 457c13675109234f6aaf4158f69be302ae6dcbac..b55f9e5a58ac426682a06a9f7da45acb48819785 100644
--- a/editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/TypeHierarchyItem.java
+++ b/editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/TypeHierarchyItem.java
@@ -31,6 +31,11 @@ import org.apache.commons.lang3.StringUtils;
 public class TypeHierarchyItem {
 
   /**
+   * An empty array of {@link TypeHierarchyItem}s.
+   */
+  public static final TypeHierarchyItem[] EMPTY_ARRAY = new TypeHierarchyItem[0];
+
+  /**
    * The class element represented by this item.
    */
   private final Element classElement;
@@ -43,12 +48,6 @@ public class TypeHierarchyItem {
   private final String displayName;
 
   /**
-   * The indexes of the items representing the interfaces implemented by this class. The list will be
-   * empty if there are no implemented interfaces.
-   */
-  private final int[] interfaces;
-
-  /**
    * The member in the class corresponding to the member on which the hierarchy was requested. This
    * field will be omitted if the hierarchy was not requested for a member or if the class does not
    * have a corresponding member.
@@ -56,6 +55,18 @@ public class TypeHierarchyItem {
   private final Element memberElement;
 
   /**
+   * The index of the item representing the superclass of this class. This field will be omitted if
+   * this item represents the class Object.
+   */
+  private final int superclass;
+
+  /**
+   * The indexes of the items representing the interfaces implemented by this class. The list will be
+   * empty if there are no implemented interfaces.
+   */
+  private final int[] interfaces;
+
+  /**
    * The indexes of the items representing the mixins referenced by this class. The list will be
    * empty if there are no classes mixed in to this class.
    */
@@ -68,12 +79,6 @@ public class TypeHierarchyItem {
   private final int[] subclasses;
 
   /**
-   * The index of the item representing the superclass of this class. This field will be omitted if
-   * this item represents the class Object.
-   */
-  private final int superclass;
-
-  /**
    * Constructor for {@link TypeHierarchyItem}.
    */
   public TypeHierarchyItem(Element classElement, String displayName, Element memberElement, int superclass, int[] interfaces, int[] mixins, int[] subclasses) {