diff --git a/packages/google-cloud-dialogflow/src/v2/agents_client.js b/packages/google-cloud-dialogflow/src/v2/agents_client.js
index e766e273ff2..56f1e66e89a 100644
--- a/packages/google-cloud-dialogflow/src/v2/agents_client.js
+++ b/packages/google-cloud-dialogflow/src/v2/agents_client.js
@@ -231,6 +231,10 @@ class AgentsClient {
             function() {
               const args = Array.prototype.slice.call(arguments, 0);
               return stub[methodName].apply(stub, args);
+            },
+          err =>
+            function() {
+              throw err;
             }
         ),
         defaults[methodName],
diff --git a/packages/google-cloud-dialogflow/src/v2/contexts_client.js b/packages/google-cloud-dialogflow/src/v2/contexts_client.js
index 7ffd2264260..40d47130e00 100644
--- a/packages/google-cloud-dialogflow/src/v2/contexts_client.js
+++ b/packages/google-cloud-dialogflow/src/v2/contexts_client.js
@@ -172,6 +172,10 @@ class ContextsClient {
             function() {
               const args = Array.prototype.slice.call(arguments, 0);
               return stub[methodName].apply(stub, args);
+            },
+          err =>
+            function() {
+              throw err;
             }
         ),
         defaults[methodName],
diff --git a/packages/google-cloud-dialogflow/src/v2/entity_types_client.js b/packages/google-cloud-dialogflow/src/v2/entity_types_client.js
index 392e89a2d8a..d80a3074a77 100644
--- a/packages/google-cloud-dialogflow/src/v2/entity_types_client.js
+++ b/packages/google-cloud-dialogflow/src/v2/entity_types_client.js
@@ -273,6 +273,10 @@ class EntityTypesClient {
             function() {
               const args = Array.prototype.slice.call(arguments, 0);
               return stub[methodName].apply(stub, args);
+            },
+          err =>
+            function() {
+              throw err;
             }
         ),
         defaults[methodName],
diff --git a/packages/google-cloud-dialogflow/src/v2/intents_client.js b/packages/google-cloud-dialogflow/src/v2/intents_client.js
index a7894bb4ef7..b8e9d492ed1 100644
--- a/packages/google-cloud-dialogflow/src/v2/intents_client.js
+++ b/packages/google-cloud-dialogflow/src/v2/intents_client.js
@@ -236,6 +236,10 @@ class IntentsClient {
             function() {
               const args = Array.prototype.slice.call(arguments, 0);
               return stub[methodName].apply(stub, args);
+            },
+          err =>
+            function() {
+              throw err;
             }
         ),
         defaults[methodName],
diff --git a/packages/google-cloud-dialogflow/src/v2/session_entity_types_client.js b/packages/google-cloud-dialogflow/src/v2/session_entity_types_client.js
index e7fed619895..bc639487c55 100644
--- a/packages/google-cloud-dialogflow/src/v2/session_entity_types_client.js
+++ b/packages/google-cloud-dialogflow/src/v2/session_entity_types_client.js
@@ -166,6 +166,10 @@ class SessionEntityTypesClient {
             function() {
               const args = Array.prototype.slice.call(arguments, 0);
               return stub[methodName].apply(stub, args);
+            },
+          err =>
+            function() {
+              throw err;
             }
         ),
         defaults[methodName],
diff --git a/packages/google-cloud-dialogflow/src/v2/sessions_client.js b/packages/google-cloud-dialogflow/src/v2/sessions_client.js
index 07fc34a5320..2e4b6343c5c 100644
--- a/packages/google-cloud-dialogflow/src/v2/sessions_client.js
+++ b/packages/google-cloud-dialogflow/src/v2/sessions_client.js
@@ -146,6 +146,10 @@ class SessionsClient {
             function() {
               const args = Array.prototype.slice.call(arguments, 0);
               return stub[methodName].apply(stub, args);
+            },
+          err =>
+            function() {
+              throw err;
             }
         ),
         defaults[methodName],
diff --git a/packages/google-cloud-dialogflow/src/v2beta1/agents_client.js b/packages/google-cloud-dialogflow/src/v2beta1/agents_client.js
index 635f23d2deb..efa60a75267 100644
--- a/packages/google-cloud-dialogflow/src/v2beta1/agents_client.js
+++ b/packages/google-cloud-dialogflow/src/v2beta1/agents_client.js
@@ -232,6 +232,10 @@ class AgentsClient {
             function() {
               const args = Array.prototype.slice.call(arguments, 0);
               return stub[methodName].apply(stub, args);
+            },
+          err =>
+            function() {
+              throw err;
             }
         ),
         defaults[methodName],
diff --git a/packages/google-cloud-dialogflow/src/v2beta1/contexts_client.js b/packages/google-cloud-dialogflow/src/v2beta1/contexts_client.js
index 47480b5af16..5ee0f90fce4 100644
--- a/packages/google-cloud-dialogflow/src/v2beta1/contexts_client.js
+++ b/packages/google-cloud-dialogflow/src/v2beta1/contexts_client.js
@@ -178,6 +178,10 @@ class ContextsClient {
             function() {
               const args = Array.prototype.slice.call(arguments, 0);
               return stub[methodName].apply(stub, args);
+            },
+          err =>
+            function() {
+              throw err;
             }
         ),
         defaults[methodName],
diff --git a/packages/google-cloud-dialogflow/src/v2beta1/documents_client.js b/packages/google-cloud-dialogflow/src/v2beta1/documents_client.js
index 4999eeaf5aa..b1cc227d8b1 100644
--- a/packages/google-cloud-dialogflow/src/v2beta1/documents_client.js
+++ b/packages/google-cloud-dialogflow/src/v2beta1/documents_client.js
@@ -200,6 +200,10 @@ class DocumentsClient {
             function() {
               const args = Array.prototype.slice.call(arguments, 0);
               return stub[methodName].apply(stub, args);
+            },
+          err =>
+            function() {
+              throw err;
             }
         ),
         defaults[methodName],
diff --git a/packages/google-cloud-dialogflow/src/v2beta1/entity_types_client.js b/packages/google-cloud-dialogflow/src/v2beta1/entity_types_client.js
index 521fd54e459..4d9c5094d68 100644
--- a/packages/google-cloud-dialogflow/src/v2beta1/entity_types_client.js
+++ b/packages/google-cloud-dialogflow/src/v2beta1/entity_types_client.js
@@ -273,6 +273,10 @@ class EntityTypesClient {
             function() {
               const args = Array.prototype.slice.call(arguments, 0);
               return stub[methodName].apply(stub, args);
+            },
+          err =>
+            function() {
+              throw err;
             }
         ),
         defaults[methodName],
diff --git a/packages/google-cloud-dialogflow/src/v2beta1/intents_client.js b/packages/google-cloud-dialogflow/src/v2beta1/intents_client.js
index 1ccaa4313bc..ef5ba9b2d33 100644
--- a/packages/google-cloud-dialogflow/src/v2beta1/intents_client.js
+++ b/packages/google-cloud-dialogflow/src/v2beta1/intents_client.js
@@ -233,6 +233,10 @@ class IntentsClient {
             function() {
               const args = Array.prototype.slice.call(arguments, 0);
               return stub[methodName].apply(stub, args);
+            },
+          err =>
+            function() {
+              throw err;
             }
         ),
         defaults[methodName],
diff --git a/packages/google-cloud-dialogflow/src/v2beta1/knowledge_bases_client.js b/packages/google-cloud-dialogflow/src/v2beta1/knowledge_bases_client.js
index 589ea0deaad..1dec88465b1 100644
--- a/packages/google-cloud-dialogflow/src/v2beta1/knowledge_bases_client.js
+++ b/packages/google-cloud-dialogflow/src/v2beta1/knowledge_bases_client.js
@@ -154,6 +154,10 @@ class KnowledgeBasesClient {
             function() {
               const args = Array.prototype.slice.call(arguments, 0);
               return stub[methodName].apply(stub, args);
+            },
+          err =>
+            function() {
+              throw err;
             }
         ),
         defaults[methodName],
diff --git a/packages/google-cloud-dialogflow/src/v2beta1/session_entity_types_client.js b/packages/google-cloud-dialogflow/src/v2beta1/session_entity_types_client.js
index 1d1cb2893b3..8c9b684865c 100644
--- a/packages/google-cloud-dialogflow/src/v2beta1/session_entity_types_client.js
+++ b/packages/google-cloud-dialogflow/src/v2beta1/session_entity_types_client.js
@@ -172,6 +172,10 @@ class SessionEntityTypesClient {
             function() {
               const args = Array.prototype.slice.call(arguments, 0);
               return stub[methodName].apply(stub, args);
+            },
+          err =>
+            function() {
+              throw err;
             }
         ),
         defaults[methodName],
diff --git a/packages/google-cloud-dialogflow/src/v2beta1/sessions_client.js b/packages/google-cloud-dialogflow/src/v2beta1/sessions_client.js
index e9b6df3245c..63cf712e7a9 100644
--- a/packages/google-cloud-dialogflow/src/v2beta1/sessions_client.js
+++ b/packages/google-cloud-dialogflow/src/v2beta1/sessions_client.js
@@ -149,6 +149,10 @@ class SessionsClient {
             function() {
               const args = Array.prototype.slice.call(arguments, 0);
               return stub[methodName].apply(stub, args);
+            },
+          err =>
+            function() {
+              throw err;
             }
         ),
         defaults[methodName],
diff --git a/packages/google-cloud-dialogflow/synth.metadata b/packages/google-cloud-dialogflow/synth.metadata
index 4ca3ac2782e..6231becb306 100644
--- a/packages/google-cloud-dialogflow/synth.metadata
+++ b/packages/google-cloud-dialogflow/synth.metadata
@@ -1,19 +1,19 @@
 {
-  "updateTime": "2019-02-05T12:10:53.596160Z",
+  "updateTime": "2019-02-13T12:13:52.522765Z",
   "sources": [
     {
       "generator": {
         "name": "artman",
-        "version": "0.16.9",
-        "dockerImage": "googleapis/artman@sha256:80c39fa84e7203c8f355e01bdeef82155013cc39dcaa48fba7a6fe2c253623e3"
+        "version": "0.16.13",
+        "dockerImage": "googleapis/artman@sha256:5fd9aee1d82a00cebf425c8fa431f5457539562f5867ad9c54370f0ec9a7ccaa"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "f26c727dde5051abefc5ad9e7dee82a2686ad2b0",
-        "internalRef": "232306662"
+        "sha": "ca61898878f0926dd9dcc68ba90764f17133efe4",
+        "internalRef": "233680013"
       }
     },
     {