Make search.findElementReferences.result.element field optional.

pkg/analysis_server/doc/api.html

Index: pkg/analysis_server/doc/api.html
diff --git a/pkg/analysis_server/doc/api.html b/pkg/analysis_server/doc/api.html
index 978e633dd7c6c168fece030c7633b22f4563d530..954f3b2c49c48095c6e74cf3f461acf8c1489d27 100644
--- a/pkg/analysis_server/doc/api.html
+++ b/pkg/analysis_server/doc/api.html
@@ -995,7 +995,7 @@ dt.typeDefinition {
   "error": <span style="color:#999999">optional</span> <a href="#type_Error">Error</a>
   "result": {
     "<b>id</b>": <a href="#type_SearchId">SearchId</a>
-    "<b>element</b>": <a href="#type_Element">Element</a>
+    "<b>element</b>": <span style="color:#999999">optional</span> <a href="#type_Element">Element</a>
   }
 }</pre></div>
         <p>
@@ -1033,13 +1033,17 @@ dt.typeDefinition {
               The identifier used to associate results with this
               search request.
             </p>
-          </dd><dt class="field"><b><i>element ( <a href="#type_Element">Element</a> )</i></b></dt><dd>
+          </dd><dt class="field"><b><i>element ( <span style="color:#999999">optional</span> <a href="#type_Element">Element</a> )</i></b></dt><dd>
             
             <p>
               The element referenced or defined at the given offset
               and whose references will be returned in the search
               results.
             </p>
+            <p>
+              If no element was found at the given location, this
+              field will be absent.
+            </p>
           </dd></dl></dd><dt class="request">search.findMemberDeclarations</dt><dd><div class="box"><pre>request: {
   "id": String
   "method": "search.findMemberDeclarations"