Regen all docs. (#700)

* Stop recursing if discovery == {}

* Generate docs with 'make docs'.
diff --git a/docs/dyn/analytics_v3.management.customDataSources.html b/docs/dyn/analytics_v3.management.customDataSources.html
index 6583a3a..02d14bf 100644
--- a/docs/dyn/analytics_v3.management.customDataSources.html
+++ b/docs/dyn/analytics_v3.management.customDataSources.html
@@ -96,10 +96,13 @@
     "kind": "analytics#customDataSources", # Collection type.
     "items": [ # Collection of custom data sources.
       { # JSON template for an Analytics custom data source.
+        "schema": [ # Collection of schema headers of the custom data source.
+          "A String",
+        ],
         "kind": "analytics#customDataSource", # Resource type for Analytics custom data source.
         "description": "A String", # Description of custom data source.
         "created": "A String", # Time this custom data source was created.
-        "uploadType": "A String",
+        "uploadType": "A String", # Upload type of the custom data source.
         "profilesLinked": [ # IDs of views (profiles) linked to the custom data source.
           "A String",
         ],