chore(firebaseml): update the api

#### firebaseml:v1beta2

The following keys were added:
- resources.projects.resources.models.methods.download (Total Keys: 10)
- schemas.DownloadModelResponse (Total Keys: 12)

Author: yoshi-automation

docs/dyn/firebaseml_v1beta2.projects.models.html

@@ -83,6 +83,9 @@ <h2>Instance Methods</h2>
 <p class="toc_element">
   <code><a href="#delete">delete(name, x__xgafv=None)</a></code></p>
 <p class="firstline">Deletes a model</p>
+<p class="toc_element">
+  <code><a href="#download">download(name, x__xgafv=None)</a></code></p>
+<p class="firstline">Gets Download information for a model. This is meant for downloading model resources onto devices. It gives very limited information about the model.</p>
 <p class="toc_element">
   <code><a href="#get">get(name, x__xgafv=None)</a></code></p>
 <p class="firstline">Gets a model resource.</p>
@@ -207,6 +210,28 @@ <h3>Method Details</h3>
 }</pre>
 </div>
 
+<div class="method">
+    <code class="details" id="download">download(name, x__xgafv=None)</code>
+  <pre>Gets Download information for a model. This is meant for downloading model resources onto devices. It gives very limited information about the model.
+
+Args:
+  name: string, Required. The name of the model to download. The name must have the form `projects/{project}/models/{model}` (required)
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+
+Returns:
+  An object of the form:
+
+    { # The response for downloading a model to device.
+  &quot;downloadUri&quot;: &quot;A String&quot;, # Output only. A download URI for the model/zip file.
+  &quot;expireTime&quot;: &quot;A String&quot;, # Output only. The time that the download URI link expires. If the link has expired, the REST call must be repeated.
+  &quot;modelFormat&quot;: &quot;A String&quot;, # Output only. The format of the model being downloaded.
+  &quot;sizeBytes&quot;: &quot;A String&quot;, # Output only. The size of the file(s), if this information is available.
+}</pre>
+</div>
+
 <div class="method">
     <code class="details" id="get">get(name, x__xgafv=None)</code>
   <pre>Gets a model resource.