Add an analysis server option to enable null-aware-operator support.

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 523a6f1e6829c643f8c0e010cfe659b430d0221e..37363edb32b8d9592b1a28fc614927fda8cbe60a 100644
--- a/pkg/analysis_server/doc/api.html
+++ b/pkg/analysis_server/doc/api.html
@@ -2224,25 +2224,31 @@ dt.typeDefinition {
         
       <dl><dt class="field"><b><i>enableAsync ( <span style="color:#999999">optional</span> bool )</i></b></dt><dd>
             
-            <p><b><i>Deprecated</i></b>/</p><p>
-            </p><p>
+            <p><b><i>Deprecated</i></b></p>
+            <p>
               True if the client wants to enable support for the
               proposed async feature.
             </p>
           </dd><dt class="field"><b><i>enableDeferredLoading ( <span style="color:#999999">optional</span> bool )</i></b></dt><dd>
             
-            <p><b><i>Deprecated</i></b>/</p><p>
-            </p><p>
+            <p><b><i>Deprecated</i></b></p>
+            <p>
               True if the client wants to enable support for the
               proposed deferred loading feature.
             </p>
           </dd><dt class="field"><b><i>enableEnums ( <span style="color:#999999">optional</span> bool )</i></b></dt><dd>
             
-            <p><b><i>Deprecated</i></b>/</p><p>
-            </p><p>
+            <p><b><i>Deprecated</i></b></p>
+            <p>
               True if the client wants to enable support for the
               proposed enum feature.
             </p>
+          </dd><dt class="field"><b><i>enableNullAwareOperators ( <span style="color:#999999">optional</span> bool )</i></b></dt><dd>
+            
+            <p>
+              True if the client wants to enable support for the
+              proposed "null aware operators" feature.
+            </p>
           </dd><dt class="field"><b><i>generateDart2jsHints ( <span style="color:#999999">optional</span> bool )</i></b></dt><dd>
             
             <p>