Getters should not have parameters.

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 3fcc8f6ebc7f6601450978809c61260eb5052043..0d6ae798549bafa6c9c924b4ef3264f9dc2b2e29 100644
--- a/pkg/analysis_server/doc/api.html
+++ b/pkg/analysis_server/doc/api.html
@@ -2309,8 +2309,9 @@ dt.typeDefinition {
             <p>
               The parameter list for the element. If the element is not
               a method or function this field will not be defined. If
-              the element has zero parameters, this field will have a
-              value of "()".
+              the element doesn't have parameters (e.g. getter), this field
+              will not be defined. If the element has zero parameters, this
+              field will have a value of "()".
             </p>
           </dd><dt class="field"><b><i>returnType ( <span style="color:#999999">optional</span> String )</i></b></dt><dd>