Update docs for 1.4.2 release
diff --git a/docs/dyn/youtube_v3.activities.html b/docs/dyn/youtube_v3.activities.html
index c965e66..0ca403f 100644
--- a/docs/dyn/youtube_v3.activities.html
+++ b/docs/dyn/youtube_v3.activities.html
@@ -75,7 +75,7 @@
 <h1><a href="youtube_v3.html">YouTube Data API</a> . <a href="youtube_v3.activities.html">activities</a></h1>
 <h2>Instance Methods</h2>
 <p class="toc_element">
-  <code><a href="#insert">insert(part=None, body)</a></code></p>
+  <code><a href="#insert">insert(part, body)</a></code></p>
 <p class="firstline">Posts a bulletin for a specific channel. (The user submitting the request must be authorized to act on the channel's behalf.)</p>
 <p class="toc_element">
   <code><a href="#list">list(part=None, pageToken=None, publishedBefore=None, channelId=None, mine=None, maxResults=None, regionCode=None, home=None, publishedAfter=None)</a></code></p>
@@ -85,15 +85,13 @@
 <p class="firstline">Retrieves the next page of results.</p>
 <h3>Method Details</h3>
 <div class="method">
-    <code class="details" id="insert">insert(part=None, body)</code>
+    <code class="details" id="insert">insert(part, body)</code>
   <pre>Posts a bulletin for a specific channel. (The user submitting the request must be authorized to act on the channel's behalf.)
 
 Note: Even though an activity resource can contain information about actions like a user rating a video or marking a video as a favorite, you need to use other API methods to generate those activity resources. For example, you would use the API's videos.rate() method to rate a video and the playlistItems.insert() method to mark a video as a favorite.
 
 Args:
-  part: string, The part parameter serves two purposes in this operation. It identifies the properties that the write operation will set as well as the properties that the API response will include.
-
-The part names that you can include in the parameter value are snippet and contentDetails. (required)
+  part: string, The part parameter serves two purposes in this operation. It identifies the properties that the write operation will set as well as the properties that the API response will include. (required)
   body: object, The request body. (required)
     The object takes the form of:
 
@@ -403,9 +401,9 @@
   <pre>Returns a list of channel activity events that match the request criteria. For example, you can retrieve events associated with a particular channel, events associated with the user's subscriptions and Google+ friends, or the YouTube home page feed, which is customized for each user.
 
 Args:
-  part: string, The part parameter specifies a comma-separated list of one or more activity resource properties that the API response will include. The part names that you can include in the parameter value are id, snippet, and contentDetails.
+  part: string, The part parameter specifies a comma-separated list of one or more activity resource properties that the API response will include.
 
-If the parameter identifies a property that contains child properties, the child properties will be included in the response. For example, in a activity resource, the snippet property contains other properties that identify the type of activity, a display title for the activity, and so forth. If you set part=snippet, the API response will also contain all of those nested properties. (required)
+If the parameter identifies a property that contains child properties, the child properties will be included in the response. For example, in an activity resource, the snippet property contains other properties that identify the type of activity, a display title for the activity, and so forth. If you set part=snippet, the API response will also contain all of those nested properties. (required)
   pageToken: string, The pageToken parameter identifies a specific page in the result set that should be returned. In an API response, the nextPageToken and prevPageToken properties identify other pages that could be retrieved.
   publishedBefore: string, The publishedBefore parameter specifies the date and time before which an activity must have occurred for that activity to be included in the API response. If the parameter value specifies a day, but not a time, then any activities that occurred that day will be excluded from the result set. The value is specified in ISO 8601 (YYYY-MM-DDThh:mm:ss.sZ) format.
   channelId: string, The channelId parameter specifies a unique YouTube channel ID. The API will then return a list of that channel's activities.