diff --git a/specification/servicebus/resource-manager/Microsoft.ServiceBus/preview/2018-01-01-preview/examples/NameSpaces/VirtualNetworkRule/SBVirtualNetworkRuleSetCreate.json b/specification/servicebus/resource-manager/Microsoft.ServiceBus/preview/2018-01-01-preview/examples/NameSpaces/VirtualNetworkRule/SBNetworkRuleSetCreate.json
similarity index 100%
rename from specification/servicebus/resource-manager/Microsoft.ServiceBus/preview/2018-01-01-preview/examples/NameSpaces/VirtualNetworkRule/SBVirtualNetworkRuleSetCreate.json
rename to specification/servicebus/resource-manager/Microsoft.ServiceBus/preview/2018-01-01-preview/examples/NameSpaces/VirtualNetworkRule/SBNetworkRuleSetCreate.json
diff --git a/specification/servicebus/resource-manager/Microsoft.ServiceBus/preview/2018-01-01-preview/examples/NameSpaces/VirtualNetworkRule/SBVirtualNetworkRuleSetGet.json b/specification/servicebus/resource-manager/Microsoft.ServiceBus/preview/2018-01-01-preview/examples/NameSpaces/VirtualNetworkRule/SBNetworkRuleSetGet.json
similarity index 100%
rename from specification/servicebus/resource-manager/Microsoft.ServiceBus/preview/2018-01-01-preview/examples/NameSpaces/VirtualNetworkRule/SBVirtualNetworkRuleSetGet.json
rename to specification/servicebus/resource-manager/Microsoft.ServiceBus/preview/2018-01-01-preview/examples/NameSpaces/VirtualNetworkRule/SBNetworkRuleSetGet.json
diff --git a/specification/servicebus/resource-manager/Microsoft.ServiceBus/preview/2018-01-01-preview/servicebus-preview.json b/specification/servicebus/resource-manager/Microsoft.ServiceBus/preview/2018-01-01-preview/servicebus-preview.json
index 689deaaf6251..acfba8a24354 100644
--- a/specification/servicebus/resource-manager/Microsoft.ServiceBus/preview/2018-01-01-preview/servicebus-preview.json
+++ b/specification/servicebus/resource-manager/Microsoft.ServiceBus/preview/2018-01-01-preview/servicebus-preview.json
@@ -46,7 +46,7 @@
         "description": "Lists all of the available ServiceBus REST API operations.",
         "parameters": [
           {
-            "$ref": "#/parameters/ApiVersionParameter"
+            "$ref": "#/parameters/apiVersionParameter"
           }
         ],
         "responses": {
@@ -83,10 +83,10 @@
         },
         "parameters": [
           {
-            "$ref": "#/parameters/ApiVersionParameter"
+            "$ref": "#/parameters/apiVersionParameter"
           },
           {
-            "$ref": "#/parameters/SubscriptionIdParameter"
+            "$ref": "#/parameters/subscriptionIdParameter"
           }
         ],
         "responses": {
@@ -123,13 +123,13 @@
         },
         "parameters": [
           {
-            "$ref": "#/parameters/ResourceGroupNameParameter"
+            "$ref": "#/parameters/resourceGroupNameParameter"
           },
           {
-            "$ref": "#/parameters/ApiVersionParameter"
+            "$ref": "#/parameters/apiVersionParameter"
           },
           {
-            "$ref": "#/parameters/SubscriptionIdParameter"
+            "$ref": "#/parameters/subscriptionIdParameter"
           }
         ],
         "responses": {
@@ -166,7 +166,7 @@
         },
         "parameters": [
           {
-            "$ref": "#/parameters/ResourceGroupNameParameter"
+            "$ref": "#/parameters/resourceGroupNameParameter"
           },
           {
             "name": "namespaceName",
@@ -185,10 +185,10 @@
             "description": "Parameters supplied to create a namespace resource."
           },
           {
-            "$ref": "#/parameters/ApiVersionParameter"
+            "$ref": "#/parameters/apiVersionParameter"
           },
           {
-            "$ref": "#/parameters/SubscriptionIdParameter"
+            "$ref": "#/parameters/subscriptionIdParameter"
           }
         ],
         "responses": {
@@ -230,16 +230,16 @@
         },
         "parameters": [
           {
-            "$ref": "#/parameters/ResourceGroupNameParameter"
+            "$ref": "#/parameters/resourceGroupNameParameter"
           },
           {
-            "$ref": "#/parameters/NamespaceNameParameter"
+            "$ref": "#/parameters/namespaceNameParameter"
           },
           {
-            "$ref": "#/parameters/ApiVersionParameter"
+            "$ref": "#/parameters/apiVersionParameter"
           },
           {
-            "$ref": "#/parameters/SubscriptionIdParameter"
+            "$ref": "#/parameters/subscriptionIdParameter"
           }
         ],
         "responses": {
@@ -275,16 +275,16 @@
         },
         "parameters": [
           {
-            "$ref": "#/parameters/ResourceGroupNameParameter"
+            "$ref": "#/parameters/resourceGroupNameParameter"
           },
           {
-            "$ref": "#/parameters/NamespaceNameParameter"
+            "$ref": "#/parameters/namespaceNameParameter"
           },
           {
-            "$ref": "#/parameters/ApiVersionParameter"
+            "$ref": "#/parameters/apiVersionParameter"
           },
           {
-            "$ref": "#/parameters/SubscriptionIdParameter"
+            "$ref": "#/parameters/subscriptionIdParameter"
           }
         ],
         "responses": {
@@ -313,10 +313,10 @@
         "description": "Updates a service namespace. Once created, this namespace's resource manifest is immutable. This operation is idempotent.",
         "parameters": [
           {
-            "$ref": "#/parameters/ResourceGroupNameParameter"
+            "$ref": "#/parameters/resourceGroupNameParameter"
           },
           {
-            "$ref": "#/parameters/NamespaceNameParameter"
+            "$ref": "#/parameters/namespaceNameParameter"
           },
           {
             "name": "parameters",
@@ -328,10 +328,10 @@
             "description": "Parameters supplied to update a namespace resource."
           },
           {
-            "$ref": "#/parameters/ApiVersionParameter"
+            "$ref": "#/parameters/apiVersionParameter"
           },
           {
-            "$ref": "#/parameters/SubscriptionIdParameter"
+            "$ref": "#/parameters/subscriptionIdParameter"
           }
         ],
         "responses": {
@@ -373,16 +373,16 @@
         "description": "Gets a list of IP Filter rules for a Namespace.",
         "parameters": [
           {
-            "$ref": "#/parameters/ResourceGroupNameParameter"
+            "$ref": "#/parameters/resourceGroupNameParameter"
           },
           {
-            "$ref": "#/parameters/NamespaceNameParameter"
+            "$ref": "#/parameters/namespaceNameParameter"
           },
           {
-            "$ref": "#/parameters/ApiVersionParameter"
+            "$ref": "#/parameters/apiVersionParameter"
           },
           {
-            "$ref": "#/parameters/SubscriptionIdParameter"
+            "$ref": "#/parameters/subscriptionIdParameter"
           }
         ],
         "responses": {
@@ -418,13 +418,13 @@
         "description": "Creates or updates an IpFilterRule for a Namespace.",
         "parameters": [
           {
-            "$ref": "#/parameters/ResourceGroupNameParameter"
+            "$ref": "#/parameters/resourceGroupNameParameter"
           },
           {
-            "$ref": "#/parameters/NamespaceNameParameter"
+            "$ref": "#/parameters/namespaceNameParameter"
           },
           {
-            "$ref": "#/parameters/IPFilterRuleNameParameter"
+            "$ref": "#/parameters/ipFilterRuleNameParameter"
           },
           {
             "name": "parameters",
@@ -436,10 +436,10 @@
             "description": "The Namespace IpFilterRule."
           },
           {
-            "$ref": "#/parameters/ApiVersionParameter"
+            "$ref": "#/parameters/apiVersionParameter"
           },
           {
-            "$ref": "#/parameters/SubscriptionIdParameter"
+            "$ref": "#/parameters/subscriptionIdParameter"
           }
         ],
         "responses": {
@@ -470,19 +470,19 @@
         "description": "Deletes an IpFilterRule for a Namespace.",
         "parameters": [
           {
-            "$ref": "#/parameters/ResourceGroupNameParameter"
+            "$ref": "#/parameters/resourceGroupNameParameter"
           },
           {
-            "$ref": "#/parameters/NamespaceNameParameter"
+            "$ref": "#/parameters/namespaceNameParameter"
           },
           {
-            "$ref": "#/parameters/IPFilterRuleNameParameter"
+            "$ref": "#/parameters/ipFilterRuleNameParameter"
           },
           {
-            "$ref": "#/parameters/ApiVersionParameter"
+            "$ref": "#/parameters/apiVersionParameter"
           },
           {
-            "$ref": "#/parameters/SubscriptionIdParameter"
+            "$ref": "#/parameters/subscriptionIdParameter"
           }
         ],
         "responses": {
@@ -513,19 +513,19 @@
         "description": "Gets an IpFilterRule for a Namespace by rule name.",
         "parameters": [
           {
-            "$ref": "#/parameters/ResourceGroupNameParameter"
+            "$ref": "#/parameters/resourceGroupNameParameter"
           },
           {
-            "$ref": "#/parameters/NamespaceNameParameter"
+            "$ref": "#/parameters/namespaceNameParameter"
           },
           {
-            "$ref": "#/parameters/IPFilterRuleNameParameter"
+            "$ref": "#/parameters/ipFilterRuleNameParameter"
           },
           {
-            "$ref": "#/parameters/ApiVersionParameter"
+            "$ref": "#/parameters/apiVersionParameter"
           },
           {
-            "$ref": "#/parameters/SubscriptionIdParameter"
+            "$ref": "#/parameters/subscriptionIdParameter"
           }
         ],
         "responses": {
@@ -558,16 +558,16 @@
         "description": "Gets a list of VirtualNetwork rules for a Namespace.",
         "parameters": [
           {
-            "$ref": "#/parameters/ResourceGroupNameParameter"
+            "$ref": "#/parameters/resourceGroupNameParameter"
           },
           {
-            "$ref": "#/parameters/NamespaceNameParameter"
+            "$ref": "#/parameters/namespaceNameParameter"
           },
           {
-            "$ref": "#/parameters/ApiVersionParameter"
+            "$ref": "#/parameters/apiVersionParameter"
           },
           {
-            "$ref": "#/parameters/SubscriptionIdParameter"
+            "$ref": "#/parameters/subscriptionIdParameter"
           }
         ],
         "responses": {
@@ -603,13 +603,13 @@
         "description": "Creates or updates an VirtualNetworkRule for a Namespace.",
         "parameters": [
           {
-            "$ref": "#/parameters/ResourceGroupNameParameter"
+            "$ref": "#/parameters/resourceGroupNameParameter"
           },
           {
-            "$ref": "#/parameters/NamespaceNameParameter"
+            "$ref": "#/parameters/namespaceNameParameter"
           },
           {
-            "$ref": "#/parameters/VirtualNetworkRuleNameParameter"
+            "$ref": "#/parameters/virtualNetworkRuleNameParameter"
           },
           {
             "name": "parameters",
@@ -621,10 +621,10 @@
             "description": "The Namespace VirtualNetworkRule."
           },
           {
-            "$ref": "#/parameters/ApiVersionParameter"
+            "$ref": "#/parameters/apiVersionParameter"
           },
           {
-            "$ref": "#/parameters/SubscriptionIdParameter"
+            "$ref": "#/parameters/subscriptionIdParameter"
           }
         ],
         "responses": {
@@ -655,19 +655,19 @@
         "description": "Deletes an VirtualNetworkRule for a Namespace.",
         "parameters": [
           {
-            "$ref": "#/parameters/ResourceGroupNameParameter"
+            "$ref": "#/parameters/resourceGroupNameParameter"
           },
           {
-            "$ref": "#/parameters/NamespaceNameParameter"
+            "$ref": "#/parameters/namespaceNameParameter"
           },
           {
-            "$ref": "#/parameters/VirtualNetworkRuleNameParameter"
+            "$ref": "#/parameters/virtualNetworkRuleNameParameter"
           },
           {
-            "$ref": "#/parameters/ApiVersionParameter"
+            "$ref": "#/parameters/apiVersionParameter"
           },
           {
-            "$ref": "#/parameters/SubscriptionIdParameter"
+            "$ref": "#/parameters/subscriptionIdParameter"
           }
         ],
         "responses": {
@@ -698,19 +698,19 @@
         "description": "Gets an VirtualNetworkRule for a Namespace by rule name.",
         "parameters": [
           {
-            "$ref": "#/parameters/ResourceGroupNameParameter"
+            "$ref": "#/parameters/resourceGroupNameParameter"
           },
           {
-            "$ref": "#/parameters/NamespaceNameParameter"
+            "$ref": "#/parameters/namespaceNameParameter"
           },
           {
-            "$ref": "#/parameters/VirtualNetworkRuleNameParameter"
+            "$ref": "#/parameters/virtualNetworkRuleNameParameter"
           },
           {
-            "$ref": "#/parameters/ApiVersionParameter"
+            "$ref": "#/parameters/apiVersionParameter"
           },
           {
-            "$ref": "#/parameters/SubscriptionIdParameter"
+            "$ref": "#/parameters/subscriptionIdParameter"
           }
         ],
         "responses": {
@@ -729,30 +729,30 @@
         }
       }
     },
-    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ServiceBus/namespaces/{namespaceName}/networkruleset/default": {
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ServiceBus/namespaces/{namespaceName}/networkrulesets/default": {
       "put": {
         "tags": [
           "Namespaces"
         ],
         "x-ms-examples": {
           "NameSpaceVirtualNetworkRuleSetCreate": {
-            "$ref": "./examples/NameSpaces/VirtualNetworkRule/SBVirtualNetworkRuleSetCreate.json"
+            "$ref": "./examples/NameSpaces/VirtualNetworkRule/SBNetworkRuleSetCreate.json"
           }
         },
-        "operationId": "Namespaces_CreateNetworkRuleSet",
+        "operationId": "Namespaces_CreateOrUpdateNetworkRuleSet",
         "description": "Gets NetworkRuleSet for a Namespace.",
         "parameters": [
           {
-            "$ref": "#/parameters/ResourceGroupNameParameter"
+            "$ref": "#/parameters/resourceGroupNameParameter"
           },
           {
-            "$ref": "#/parameters/NamespaceNameParameter"
+            "$ref": "#/parameters/namespaceNameParameter"
           },
           {
-            "$ref": "#/parameters/ApiVersionParameter"
+            "$ref": "#/parameters/apiVersionParameter"
           },
           {
-            "$ref": "#/parameters/SubscriptionIdParameter"
+            "$ref": "#/parameters/subscriptionIdParameter"
           },
           {
             "name": "parameters",
@@ -785,23 +785,23 @@
         ],
         "x-ms-examples": {
           "NameSpaceVirtualNetworkRuleSetget": {
-            "$ref": "./examples/NameSpaces/VirtualNetworkRule/SBVirtualNetworkRuleSetGet.json"
+            "$ref": "./examples/NameSpaces/VirtualNetworkRule/SBNetworkRuleSetGet.json"
           }
         },
         "operationId": "Namespaces_GetNetworkRuleSet",
         "description": "Gets NetworkRuleSet for a Namespace.",
         "parameters": [
           {
-            "$ref": "#/parameters/ResourceGroupNameParameter"
+            "$ref": "#/parameters/resourceGroupNameParameter"
           },
           {
-            "$ref": "#/parameters/NamespaceNameParameter"
+            "$ref": "#/parameters/namespaceNameParameter"
           },
           {
-            "$ref": "#/parameters/ApiVersionParameter"
+            "$ref": "#/parameters/apiVersionParameter"
           },
           {
-            "$ref": "#/parameters/SubscriptionIdParameter"
+            "$ref": "#/parameters/subscriptionIdParameter"
           }
         ],
         "responses": {
@@ -1266,21 +1266,21 @@
     }
   },
   "parameters": {
-    "SubscriptionIdParameter": {
+    "subscriptionIdParameter": {
       "name": "subscriptionId",
       "in": "path",
       "required": true,
       "type": "string",
       "description": "Subscription credentials that uniquely identify a Microsoft Azure subscription. The subscription ID forms part of the URI for every service call."
     },
-    "ApiVersionParameter": {
+    "apiVersionParameter": {
       "name": "api-version",
       "in": "query",
       "required": true,
       "type": "string",
       "description": "Client API version."
     },
-    "ResourceGroupNameParameter": {
+    "resourceGroupNameParameter": {
       "name": "resourceGroupName",
       "in": "path",
       "required": true,
@@ -1290,7 +1290,7 @@
       "x-ms-parameter-location": "method",
       "description": "Name of the Resource group within the Azure subscription."
     },
-    "NamespaceNameParameter": {
+    "namespaceNameParameter": {
       "name": "namespaceName",
       "in": "path",
       "required": true,
@@ -1300,7 +1300,7 @@
       "x-ms-parameter-location": "method",
       "description": "The namespace name"
     },
-    "SkuNameParameter": {
+    "skuNameParameter": {
       "name": "sku",
       "in": "path",
       "required": true,
@@ -1310,7 +1310,7 @@
       "x-ms-parameter-location": "method",
       "description": "The sku type."
     },
-    "SkipParameter": {
+    "skipParameter": {
       "name": "$skip",
       "description": "Skip is only used if a previous operation returned a partial result. If a previous response contains a nextLink element, the value of the nextLink element will include a skip parameter that specifies a starting point to use for subsequent calls.",
       "in": "query",
@@ -1320,7 +1320,7 @@
       "maximum": 1000,
       "x-ms-parameter-location": "method"
     },
-    "TopParameter": {
+    "topParameter": {
       "name": "$top",
       "description": "May be used to limit the number of results to the most recent N usageDetails.",
       "in": "query",
@@ -1330,7 +1330,7 @@
       "maximum": 1000,
       "x-ms-parameter-location": "method"
     },
-    "IPFilterRuleNameParameter": {
+    "ipFilterRuleNameParameter": {
       "name": "ipFilterRuleName",
       "in": "path",
       "required": true,
@@ -1339,7 +1339,7 @@
       "x-ms-parameter-location": "method",
       "description": "The IP Filter Rule name."
     },
-    "VirtualNetworkRuleNameParameter": {
+    "virtualNetworkRuleNameParameter": {
       "name": "virtualNetworkRuleName",
       "in": "path",
       "required": true,