Autogenerated update (2020-05-14)

Update:
- appengine_v1
- appengine_v1beta
- bigqueryreservation_v1
- bigqueryreservation_v1alpha2
- bigqueryreservation_v1beta1
- container_v1
- firebasehosting_v1beta1
- games_management_v1management
- gameservices_v1beta
- gmail_v1
- healthcare_v1
- healthcare_v1beta1
- jobs_v3p1beta1
- run_v1
- run_v1alpha1
- storage_v1
- testing_v1
- toolresults_v1beta3
- youtube_partner_v1

generated/google/apis/testing_v1/classes.rb

@@ -368,7 +368,8 @@ module Google
         # @return [Array<String>]
         attr_accessor :tags
       
-        # URL of a thumbnail image of the device.
+        # URL of a thumbnail image (photo) of the device.
+        # e.g. https://lh3.googleusercontent.com/90WcauuJiCYABEl8U0lcZeuS5STUbf2yW...
         # Corresponds to the JSON property `thumbnailUrl`
         # @return [String]
         attr_accessor :thumbnail_url
@@ -1209,7 +1210,7 @@ module Google
       end
       
       # A description of an iOS device tests may be run on.
-      # Next tag: 12
+      # Next tag: 13
       class IosModel
         include Google::Apis::Core::Hashable