Refresh docs
diff --git a/docs/dyn/bigquery_v2.tabledata.html b/docs/dyn/bigquery_v2.tabledata.html
index a1e3323..d63b287 100644
--- a/docs/dyn/bigquery_v2.tabledata.html
+++ b/docs/dyn/bigquery_v2.tabledata.html
@@ -100,7 +100,7 @@
     "rows": [ # Rows of results.
       { # Represents a single row in the result set, consisting of one or more fields.
         "f": [
-          { # Represents a single cell in the result set.
+          { # Represents a single cell in the result set. Users of the java client can detect whether their value result is null by calling 'com.google.api.client.util.Data.isNull(cell.getV())'.
             "v": "",
           },
         ],