Regen all docs. (#700)

* Stop recursing if discovery == {}

* Generate docs with 'make docs'.
diff --git a/docs/dyn/fitness_v1.users.dataset.html b/docs/dyn/fitness_v1.users.dataset.html
index 8b68b2f..dcc416f 100644
--- a/docs/dyn/fitness_v1.users.dataset.html
+++ b/docs/dyn/fitness_v1.users.dataset.html
@@ -107,7 +107,7 @@
       "minDurationMillis": "A String", # Specifies that only activity segments of duration longer than minDurationMillis are considered and used as a container for aggregated data.
     },
     "startTimeMillis": "A String", # The start of a window of time. Data that intersects with this time window will be aggregated. The time is in milliseconds since epoch, inclusive.
-    "filteredDataQualityStandard": [ # A list of acceptable data quality standards. Only data points which conform to at least one of the specified data quality standards will be returned. If the list is empty, all data points are returned.
+    "filteredDataQualityStandard": [ # DO NOT POPULATE THIS FIELD. As data quality standards are deprecated, filling it in will result in no data sources being returned. It will be removed in a future version entirely.
       "A String",
     ],
     "bucketByTime": { # Specifies that data be aggregated by a single time interval. Mutually exclusive of other bucketing specifications.
@@ -132,7 +132,7 @@
           { # A dataset represents a projection container for data points. They do not carry any info of their own. Datasets represent a set of data points from a particular data source. A data point can be found in more than one dataset.
               "minStartTimeNs": "A String", # The smallest start time of all data points in this possibly partial representation of the dataset. Time is in nanoseconds from epoch. This should also match the first part of the dataset identifier.
               "nextPageToken": "A String", # This token will be set when a dataset is received in response to a GET request and the dataset is too large to be included in a single response. Provide this value in a subsequent GET request to return the next page of data points within this dataset.
-              "maxEndTimeNs": "A String", # The largest end time of all data points in this possibly partial representation of the dataset. Time is in nanoseconds from epoch. This should also match the first part of the dataset identifier.
+              "maxEndTimeNs": "A String", # The largest end time of all data points in this possibly partial representation of the dataset. Time is in nanoseconds from epoch. This should also match the second part of the dataset identifier.
               "dataSourceId": "A String", # The data stream ID of the data source that created the points in this dataset.
               "point": [ # A partial list of data points contained in the dataset, ordered by largest endTimeNanos first. This list is considered complete when retrieving a small dataset and partial when patching a dataset or retrieving a dataset that is too large to include in a single response.
                 { # Represents a single data point, generated by a particular data source. A data point holds a value for each field, an end timestamp and an optional start time. The exact semantics of each of these attributes are specified in the documentation for the particular data type.
@@ -165,8 +165,10 @@
                       "stringVal": "A String", # String value. When this is set, other values must not be set. Strings should be kept small whenever possible. Data streams with large string values and high data frequency may be down sampled.
                     },
                   ],
-                  "computationTimeMillis": "A String", # Used for version checking during transformation; that is, a datapoint can only replace another datapoint that has an older computation time stamp.
+                  "computationTimeMillis": "A String", # DO NOT USE THIS FIELD. It is ignored, and not stored.
                   "originDataSourceId": "A String", # If the data point is contained in a dataset for a derived data source, this field will be populated with the data source stream ID that created the data point originally.
+                      #
+                      # WARNING: do not rely on this field for anything other than debugging. The value of this field, if it is set at all, is an implementation detail and is not guaranteed to remain consistent.
                   "rawTimestampNanos": "A String", # The raw timestamp from the original SensorEvent.
                 },
               ],