Regen all docs. (#700)

* Stop recursing if discovery == {}

* Generate docs with 'make docs'.
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+
+<h1><a href="testing_v1.html">Cloud Testing API</a> . <a href="testing_v1.applicationDetailService.html">applicationDetailService</a></h1>
+<h2>Instance Methods</h2>
+<p class="toc_element">
+  <code><a href="#getApkDetails">getApkDetails(body, x__xgafv=None)</a></code></p>
+<p class="firstline">Gets the details of an Android application APK.</p>
+<h3>Method Details</h3>
+<div class="method">
+    <code class="details" id="getApkDetails">getApkDetails(body, x__xgafv=None)</code>
+  <pre>Gets the details of an Android application APK.
+
+Args:
+  body: object, The request body. (required)
+    The object takes the form of:
+
+{ # A reference to a file, used for user inputs.
+    "gcsPath": "A String", # A path to a file in Google Cloud Storage.
+        # Example: gs://build-app-1414623860166/app-debug-unaligned.apk
+  }
+
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+
+Returns:
+  An object of the form:
+
+    { # Response containing the details of the specified Android application APK.
+    "apkDetail": { # Android application details based on application manifest and apk archive # Details of the Android APK.
+        # contents.
+      "apkManifest": { # An Android app manifest. See
+          # http://developer.android.com/guide/topics/manifest/manifest-intro.html
+        "packageName": "A String", # Full Java-style package name for this application, e.g.
+            # "com.example.foo".
+        "maxSdkVersion": 42, # Maximum API level on which the application is designed to run.
+        "minSdkVersion": 42, # Minimum API level required for the application to run.
+        "targetSdkVersion": 42, # Specifies the API Level on which the application is designed to run.
+        "applicationLabel": "A String", # User-readable name for the application.
+        "intentFilters": [
+          { # The <intent-filter> section of an <activity> tag.
+              # https://developer.android.com/guide/topics/manifest/intent-filter-element.html
+            "mimeType": "A String", # The android:mimeType value of the <data> tag.
+            "actionNames": [ # The android:name value of the <action> tag.
+              "A String",
+            ],
+            "categoryNames": [ # The android:name value of the <category> tag.
+              "A String",
+            ],
+          },
+        ],
+      },
+    },
+  }</pre>
+</div>
+
+</body></html>
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