Generate hashcode on the java types.

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

Index: editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/CompletionSuggestion.java
diff --git a/editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/CompletionSuggestion.java b/editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/CompletionSuggestion.java
index df6bff7e13f15ae47b5cbcfd44d7d91aaf198570..388d2e831f9d33801ccc2bd67f05c8a15ae22bed 100644
--- a/editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/CompletionSuggestion.java
+++ b/editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/CompletionSuggestion.java
@@ -26,6 +26,7 @@ import com.google.gson.JsonArray;
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonPrimitive;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
 import java.util.ArrayList;
 import java.util.Iterator;
 import org.apache.commons.lang3.StringUtils;
@@ -357,6 +358,29 @@ public class CompletionSuggestion {
     return selectionOffset;
   }
 
+  @Override
+  public int hashCode() {
+    HashCodeBuilder builder = new HashCodeBuilder();
+    builder.append(kind);
+    builder.append(relevance);
+    builder.append(completion);
+    builder.append(selectionOffset);
+    builder.append(selectionLength);
+    builder.append(isDeprecated);
+    builder.append(isPotential);
+    builder.append(docSummary);
+    builder.append(docComplete);
+    builder.append(declaringType);
+    builder.append(returnType);
+    builder.append(parameterNames);
+    builder.append(parameterTypes);
+    builder.append(requiredParameterCount);
+    builder.append(positionalParameterCount);
+    builder.append(parameterName);
+    builder.append(parameterType);
+    return builder.toHashCode();
+  }
+
   public JsonObject toJson() {
     JsonObject jsonObject = new JsonObject();
     jsonObject.addProperty("kind", kind);