Update docs for 1.4.1 release
diff --git a/docs/dyn/fitness_v1.users.sessions.html b/docs/dyn/fitness_v1.users.sessions.html
index 27afc3d..70ee2fb 100644
--- a/docs/dyn/fitness_v1.users.sessions.html
+++ b/docs/dyn/fitness_v1.users.sessions.html
@@ -127,6 +127,7 @@
           "detailsUrl": "A String", # An optional URI that can be used to link back to the application.
         },
         "startTimeMillis": "A String", # A start time, in milliseconds since epoch, inclusive.
+        "activeTimeMillis": "A String", # Session active time. While start_time_millis and end_time_millis define the full session time, the active time can be shorter and specified by active_time_millis. If the inactive time during the session is known, it should also be inserted via a com.google.activity.segment data point with a STILL activity value
         "id": "A String", # A client-generated identifier that is unique across all sessions owned by this particular user.
         "name": "A String", # A human readable name of the session.
       },
@@ -144,6 +145,7 @@
           "detailsUrl": "A String", # An optional URI that can be used to link back to the application.
         },
         "startTimeMillis": "A String", # A start time, in milliseconds since epoch, inclusive.
+        "activeTimeMillis": "A String", # Session active time. While start_time_millis and end_time_millis define the full session time, the active time can be shorter and specified by active_time_millis. If the inactive time during the session is known, it should also be inserted via a com.google.activity.segment data point with a STILL activity value
         "id": "A String", # A client-generated identifier that is unique across all sessions owned by this particular user.
         "name": "A String", # A human readable name of the session.
       },
@@ -187,6 +189,7 @@
     "detailsUrl": "A String", # An optional URI that can be used to link back to the application.
   },
   "startTimeMillis": "A String", # A start time, in milliseconds since epoch, inclusive.
+  "activeTimeMillis": "A String", # Session active time. While start_time_millis and end_time_millis define the full session time, the active time can be shorter and specified by active_time_millis. If the inactive time during the session is known, it should also be inserted via a com.google.activity.segment data point with a STILL activity value
   "id": "A String", # A client-generated identifier that is unique across all sessions owned by this particular user.
   "name": "A String", # A human readable name of the session.
 }
@@ -208,6 +211,7 @@
       "detailsUrl": "A String", # An optional URI that can be used to link back to the application.
     },
     "startTimeMillis": "A String", # A start time, in milliseconds since epoch, inclusive.
+    "activeTimeMillis": "A String", # Session active time. While start_time_millis and end_time_millis define the full session time, the active time can be shorter and specified by active_time_millis. If the inactive time during the session is known, it should also be inserted via a com.google.activity.segment data point with a STILL activity value
     "id": "A String", # A client-generated identifier that is unique across all sessions owned by this particular user.
     "name": "A String", # A human readable name of the session.
   }</pre>