java2dart improvements and new analyzer_experimental snapshot.

pkg/analyzer_experimental/lib/src/generated/utilities_collection.dart

 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 library engine.utilities.collection;
 import 'java_core.dart';
 /**
  * The class `BooleanArray` defines methods for operating on integers as if they were arrays
  * of booleans. These arrays can be indexed by either integers or by enumeration constants.
  */
 class BooleanArray {
 
   /**
    * Return the value of the element at the given index.
    *
    * @param array the array being accessed
    * @param index the index of the element being accessed
    * @return the value of the element at the given index
    * @throws IndexOutOfBoundsException if the index is not between zero (0) and 31, inclusive
    */
-  static bool get(int array, Enum<Object> index) => get2(array, index.ordinal);
+  static bool get(int array, Enum index) => get2(array, index.ordinal);
 
   /**
    * Return the value of the element at the given index.
    *
    * @param array the array being accessed
    * @param index the index of the element being accessed
    * @return the value of the element at the given index
    * @throws IndexOutOfBoundsException if the index is not between zero (0) and 31, inclusive
    */
   static bool get2(int array, int index) {
     checkIndex(index);
     return (array & (1 << index)) > 0;
   }
 
   /**
    * Set the value of the element at the given index to the given value.
    *
    * @param array the array being modified
    * @param index the index of the element being set
    * @param value the value to be assigned to the element
    * @return the updated value of the array
    * @throws IndexOutOfBoundsException if the index is not between zero (0) and 31, inclusive
    */
-  static int set(int array, Enum<Object> index, bool value) => set2(array, index.ordinal, value);
+  static int set(int array, Enum index, bool value) => set2(array, index.ordinal, value);
 
   /**
    * Set the value of the element at the given index to the given value.
    *
    * @param array the array being modified
    * @param index the index of the element being set
    * @param value the value to be assigned to the element
    * @return the updated value of the array
    * @throws IndexOutOfBoundsException if the index is not between zero (0) and 31, inclusive
    */
@@ skipping 29 matching lines @@
    *
    * @param list the list to which the elements are to be added
    * @param elements the elements to be added to the list
    */
   static void addAll(List list, List<Object> elements) {
     for (Object element in elements) {
       list.add(element);
     }
   }
 }