chore: regens API reference docs (#889)

diff --git a/docs/dyn/dataflow_v1b3.projects.snapshots.html b/docs/dyn/dataflow_v1b3.projects.snapshots.html
index 9bbd64e..f9662b8 100644
--- a/docs/dyn/dataflow_v1b3.projects.snapshots.html
+++ b/docs/dyn/dataflow_v1b3.projects.snapshots.html
@@ -99,10 +99,20 @@
 
     { # Represents a snapshot of a job.
     "sourceJobId": "A String", # The job this snapshot was created from.
+    "diskSizeBytes": "A String", # The disk byte size of the snapshot. Only available for snapshots in READY
+        # state.
+    "description": "A String", # User specified description of the snapshot. Maybe empty.
     "projectId": "A String", # The project this snapshot belongs to.
     "creationTime": "A String", # The time this snapshot was created.
     "state": "A String", # State of the snapshot.
     "ttl": "A String", # The time after which this snapshot will be automatically deleted.
+    "pubsubMetadata": [ # PubSub snapshot metadata.
+      { # Represents a Pubsub snapshot.
+        "expireTime": "A String", # The expire time of the Pubsub snapshot.
+        "snapshotName": "A String", # The name of the Pubsub snapshot.
+        "topicName": "A String", # The name of the Pubsub topic.
+      },
+    ],
     "id": "A String", # The unique ID of this snapshot.
   }</pre>
 </div>
@@ -127,10 +137,20 @@
     "snapshots": [ # Returned snapshots.
       { # Represents a snapshot of a job.
         "sourceJobId": "A String", # The job this snapshot was created from.
+        "diskSizeBytes": "A String", # The disk byte size of the snapshot. Only available for snapshots in READY
+            # state.
+        "description": "A String", # User specified description of the snapshot. Maybe empty.
         "projectId": "A String", # The project this snapshot belongs to.
         "creationTime": "A String", # The time this snapshot was created.
         "state": "A String", # State of the snapshot.
         "ttl": "A String", # The time after which this snapshot will be automatically deleted.
+        "pubsubMetadata": [ # PubSub snapshot metadata.
+          { # Represents a Pubsub snapshot.
+            "expireTime": "A String", # The expire time of the Pubsub snapshot.
+            "snapshotName": "A String", # The name of the Pubsub snapshot.
+            "topicName": "A String", # The name of the Pubsub topic.
+          },
+        ],
         "id": "A String", # The unique ID of this snapshot.
       },
     ],