Regen docs (#364)

diff --git a/docs/dyn/cloudbilling_v1.billingAccounts.projects.html b/docs/dyn/cloudbilling_v1.billingAccounts.projects.html
index 4f025a2..8edfd53 100644
--- a/docs/dyn/cloudbilling_v1.billingAccounts.projects.html
+++ b/docs/dyn/cloudbilling_v1.billingAccounts.projects.html
@@ -75,33 +75,56 @@
 <h1><a href="cloudbilling_v1.html">Google Cloud Billing API</a> . <a href="cloudbilling_v1.billingAccounts.html">billingAccounts</a> . <a href="cloudbilling_v1.billingAccounts.projects.html">projects</a></h1>
 <h2>Instance Methods</h2>
 <p class="toc_element">
-  <code><a href="#list">list(name, pageToken=None, x__xgafv=None, pageSize=None)</a></code></p>
-<p class="firstline">Lists the projects associated with a billing account. The current authenticated user must be an [owner of the billing account](https://support.google.com/cloud/answer/4430947).</p>
+  <code><a href="#list">list(name=None, pageToken=None, x__xgafv=None, pageSize=None)</a></code></p>
+<p class="firstline">Lists the projects associated with a billing account. The current</p>
 <p class="toc_element">
   <code><a href="#list_next">list_next(previous_request, previous_response)</a></code></p>
 <p class="firstline">Retrieves the next page of results.</p>
 <h3>Method Details</h3>
 <div class="method">
-    <code class="details" id="list">list(name, pageToken=None, x__xgafv=None, pageSize=None)</code>
-  <pre>Lists the projects associated with a billing account. The current authenticated user must be an [owner of the billing account](https://support.google.com/cloud/answer/4430947).
+    <code class="details" id="list">list(name=None, pageToken=None, x__xgafv=None, pageSize=None)</code>
+  <pre>Lists the projects associated with a billing account. The current
+authenticated user must be an [owner of the billing
+account](https://support.google.com/cloud/answer/4430947).
 
 Args:
-  name: string, The resource name of the billing account associated with the projects that you want to list. For example, `billingAccounts/012345-567890-ABCDEF`. (required)
-  pageToken: string, A token identifying a page of results to be returned. This should be a `next_page_token` value returned from a previous `ListProjectBillingInfo` call. If unspecified, the first page of results is returned.
+  name: string, The resource name of the billing account associated with the projects that
+you want to list. For example, `billingAccounts/012345-567890-ABCDEF`. (required)
+  pageToken: string, A token identifying a page of results to be returned. This should be a
+`next_page_token` value returned from a previous `ListProjectBillingInfo`
+call. If unspecified, the first page of results is returned.
   x__xgafv: string, V1 error format.
-  pageSize: integer, Requested page size. The maximum page size is 100; this is also the default.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+  pageSize: integer, Requested page size. The maximum page size is 100; this is also the
+default.
 
 Returns:
   An object of the form:
 
     { # Request message for `ListProjectBillingInfoResponse`.
-    "nextPageToken": "A String", # A token to retrieve the next page of results. To retrieve the next page, call `ListProjectBillingInfo` again with the `page_token` field set to this value. This field is empty if there are no more results to retrieve.
-    "projectBillingInfo": [ # A list of `ProjectBillingInfo` resources representing the projects associated with the billing account.
-      { # Encapsulation of billing information for a Developers Console project. A project has at most one associated billing account at a time (but a billing account can be assigned to multiple projects).
-        "projectId": "A String", # The ID of the project that this `ProjectBillingInfo` represents, such as `tokyo-rain-123`. This is a convenience field so that you don't need to parse the `name` field to obtain a project ID. This field is read-only.
-        "name": "A String", # The resource name for the `ProjectBillingInfo`; has the form `projects/{project_id}/billingInfo`. For example, the resource name for the billing information for project `tokyo-rain-123` would be `projects/tokyo-rain-123/billingInfo`. This field is read-only.
-        "billingEnabled": True or False, # True if the project is associated with an open billing account, to which usage on the project is charged. False if the project is associated with a closed billing account, or no billing account at all, and therefore cannot use paid services. This field is read-only.
-        "billingAccountName": "A String", # The resource name of the billing account associated with the project, if any. For example, `billingAccounts/012345-567890-ABCDEF`.
+    "nextPageToken": "A String", # A token to retrieve the next page of results. To retrieve the next page,
+        # call `ListProjectBillingInfo` again with the `page_token` field set to this
+        # value. This field is empty if there are no more results to retrieve.
+    "projectBillingInfo": [ # A list of `ProjectBillingInfo` resources representing the projects
+        # associated with the billing account.
+      { # Encapsulation of billing information for a Cloud Console project. A project
+          # has at most one associated billing account at a time (but a billing account
+          # can be assigned to multiple projects).
+        "projectId": "A String", # The ID of the project that this `ProjectBillingInfo` represents, such as
+            # `tokyo-rain-123`. This is a convenience field so that you don't need to
+            # parse the `name` field to obtain a project ID. This field is read-only.
+        "name": "A String", # The resource name for the `ProjectBillingInfo`; has the form
+            # `projects/{project_id}/billingInfo`. For example, the resource name for the
+            # billing information for project `tokyo-rain-123` would be
+            # `projects/tokyo-rain-123/billingInfo`. This field is read-only.
+        "billingEnabled": True or False, # True if the project is associated with an open billing account, to which
+            # usage on the project is charged. False if the project is associated with a
+            # closed billing account, or no billing account at all, and therefore cannot
+            # use paid services. This field is read-only.
+        "billingAccountName": "A String", # The resource name of the billing account associated with the project, if
+            # any. For example, `billingAccounts/012345-567890-ABCDEF`.
       },
     ],
   }</pre>