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pkg/analysis_server/lib/src/operation/operation_queue.dart

Index: pkg/analysis_server/lib/src/operation/operation_queue.dart
diff --git a/pkg/analysis_server/lib/src/operation/operation_queue.dart b/pkg/analysis_server/lib/src/operation/operation_queue.dart
index 6ef1b84fd35fb243d761479ac6626f36faebc8e1..3843ab2179cd9623601bcde783c45206bfb5d921 100644
--- a/pkg/analysis_server/lib/src/operation/operation_queue.dart
+++ b/pkg/analysis_server/lib/src/operation/operation_queue.dart
@@ -51,6 +51,19 @@ class ServerOperationQueue {
   }
 
   /**
+   * Return the next operation to perform, or `null` if the queue is empty. This
+   * method does not change the queue.
+   */
+  ServerOperation peek() {
+    for (Queue<ServerOperation> queue in _queues) {
+      if (!queue.isEmpty) {
+        return queue.first;
+      }
+    }
+    return null;
+  }
+
+  /**
    * Returns the next operation to perform or `null` if empty.
    */
   ServerOperation take() {