[doclint] parse getters as properties

From the api standpoint, there's no difference between property
and a getter.

References #14.

docs/api.md

@@ -86,7 +86,7 @@
   * [headers.values()](#headersvalues)
 - [class: Body](#class-body)
   * [body.arrayBuffer()](#bodyarraybuffer)
-  * [body.bodyUsed()](#bodybodyused)
+  * [body.bodyUsed](#bodybodyused)
   * [body.buffer()](#bodybuffer)
   * [body.json()](#bodyjson)
   * [body.text()](#bodytext)
@@ -449,7 +449,7 @@ If there's already a header with name `name`, the header gets overwritten.
 
 ### class: Body
 #### body.arrayBuffer()
-#### body.bodyUsed()
+#### body.bodyUsed
 #### body.buffer()
 #### body.json()
 #### body.text()

utils/doclint/JSBuilder.js

@@ -30,10 +30,15 @@ class JSOutline {
   _onMethodDefinition(node) {
     console.assert(this._currentClassName !== null);
     console.assert(node.value.type === 'FunctionExpression');
+    let methodName = this._extractText(node.key);
+    if (node.kind === 'get') {
+      let property = Documentation.Member.createProperty(methodName);
+      this._currentClassMembers.push(property);
+      return;
+    }
     const args = [];
     for (let param of node.value.params)
       args.push(new Documentation.Argument(this._extractText(param)));
-    let methodName = this._extractText(node.key);
     let method = Documentation.Member.createMethod(methodName, args);
     this._currentClassMembers.push(method);
     // Extract properties from constructor.

utils/doclint/test/02-method-errors/foo.js

@@ -4,4 +4,7 @@ class Foo {
 
   stop() {
   }
+
+  get zzz() {
+  }
 }

utils/doclint/test/golden/02-method-errors.txt

@@ -1,2 +1,3 @@
 [MarkDown] Non-existing method found: Foo.proceed()
 [MarkDown] Method not found: Foo.stop()
+[MarkDown] Property not found: Foo.zzz