diff --git a/Gopkg.lock b/Gopkg.lock
index edcfae5d8824..a298e038ea6a 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -2,6 +2,7 @@
 
 
 [[projects]]
+  digest = "1:5923e22a060ab818a015593422f9e8a35b9d881d4cfcfed0669a82959b11c7ee"
   name = "github.com/Azure/go-autorest"
   packages = [
     "autorest",
@@ -10,52 +11,64 @@
     "autorest/azure/auth",
     "autorest/date",
     "autorest/to",
-    "autorest/validation"
+    "autorest/validation",
   ]
+  pruneopts = ""
   revision = "1f7cd6cfe0adea687ad44a512dfe76140f804318"
   version = "v10.12.0"
 
 [[projects]]
+  digest = "1:6098222470fe0172157ce9bbef5d2200df4edde17ee649c5d6e48330e4afa4c6"
   name = "github.com/dgrijalva/jwt-go"
   packages = ["."]
+  pruneopts = ""
   revision = "06ea1031745cb8b3dab3f6a236daf2b0aa468b7e"
   version = "v3.2.0"
 
 [[projects]]
   branch = "master"
+  digest = "1:654ac9799e7a8a586d8690bb2229a4f3408bbfe2c5494bf4dfe043053eeb5496"
   name = "github.com/dimchansky/utfbom"
   packages = ["."]
+  pruneopts = ""
   revision = "6c6132ff69f0f6c088739067407b5d32c52e1d0f"
 
 [[projects]]
   branch = "master"
+  digest = "1:e736daced8bc48a910e0634540bc5cd63f1eea1b20fed65f8d82c8ad65eb10b2"
   name = "github.com/dnaeon/go-vcr"
   packages = [
     "cassette",
-    "recorder"
+    "recorder",
   ]
+  pruneopts = ""
   revision = "8b144be0744f013a1b44386058f1fcb3ba98177d"
 
 [[projects]]
+  digest = "1:eb53021a8aa3f599d29c7102e65026242bdedce998a54837dc67f14b6a97c5fd"
   name = "github.com/fsnotify/fsnotify"
   packages = ["."]
+  pruneopts = ""
   revision = "c2828203cd70a50dcccfb2761f8b1f8ceef9a8e9"
   version = "v1.4.7"
 
 [[projects]]
   branch = "master"
+  digest = "1:c1e35087694b689ce1cf4f4277612b6ac0b55725fa791271ae0e3ddcd1cc0c7b"
   name = "github.com/globalsign/mgo"
   packages = [
     ".",
     "bson",
     "internal/json",
     "internal/sasl",
-    "internal/scram"
+    "internal/scram",
   ]
+  pruneopts = ""
   revision = "113d3961e7311526535a1ef7042196563d442761"
 
 [[projects]]
   branch = "master"
+  digest = "1:9b7c5846d70f425d7fe279595e32a20994c6075e87be03b5c367ed07280877c5"
   name = "github.com/hashicorp/hcl"
   packages = [
     ".",
@@ -67,143 +80,187 @@
     "hcl/token",
     "json/parser",
     "json/scanner",
-    "json/token"
+    "json/token",
   ]
+  pruneopts = ""
   revision = "ef8a98b0bbce4a65b5aa4c368430a80ddc533168"
 
 [[projects]]
+  digest = "1:870d441fe217b8e689d7949fef6e43efbc787e50f200cb1e70dbca9204a1d6be"
   name = "github.com/inconshreveable/mousetrap"
   packages = ["."]
+  pruneopts = ""
   revision = "76626ae9c91c4f2a10f34cad8ce83ea42c93bb75"
   version = "v1.0"
 
 [[projects]]
+  digest = "1:3108ec0946181c60040ff51b811908f89d03e521e2b4ade5ef5c65b3c0e911ae"
   name = "github.com/kr/pretty"
   packages = ["."]
+  pruneopts = ""
   revision = "73f6ac0b30a98e433b289500d779f50c1a6f0712"
   version = "v0.1.0"
 
 [[projects]]
+  digest = "1:11b056b4421396ab14e384ab8ab8c2079b03f1e51aa5eb4d9b81f9e0d1aa8fbf"
   name = "github.com/kr/text"
   packages = ["."]
+  pruneopts = ""
   revision = "e2ffdb16a802fe2bb95e2e35ff34f0e53aeef34f"
   version = "v0.1.0"
 
 [[projects]]
+  digest = "1:961dc3b1d11f969370533390fdf203813162980c858e1dabe827b60940c909a5"
   name = "github.com/magiconair/properties"
   packages = ["."]
+  pruneopts = ""
   revision = "c2353362d570a7bfa228149c62842019201cfb71"
   version = "v1.8.0"
 
 [[projects]]
+  digest = "1:71a28fe7d86ace8e51192c97eb4fd376c27ae0ed3a6ff46b41a6da76a0785d78"
   name = "github.com/marstr/collection"
   packages = ["."]
+  pruneopts = ""
   revision = "871b1cfa2ab97d3d8f54a034280907896190c346"
   version = "v0.3.3"
 
 [[projects]]
   branch = "master"
+  digest = "1:5a07891ac7651f2b0db3ca615f88ca80e38a41c0c9f60a6fb123b8cbe3d8d386"
   name = "github.com/marstr/goalias"
   packages = ["model"]
+  pruneopts = ""
   revision = "8dff9a14db648bfdd58d45515d3eaaee23aad078"
 
 [[projects]]
+  digest = "1:f95025d583786875a71183888acc9d0987fc96f12d4f5afab3d7558797ea1c5a"
   name = "github.com/marstr/guid"
   packages = ["."]
+  pruneopts = ""
   revision = "8bd9a64bf37eb297b492a4101fb28e80ac0b290f"
   version = "v1.1.0"
 
 [[projects]]
   branch = "master"
+  digest = "1:72da3dc7eddc1f4695da12df937debc7dcf027b1c0f57ec415fdad097cef7c43"
   name = "github.com/marstr/randname"
   packages = ["."]
+  pruneopts = ""
   revision = "48a63b6052f1f9373db9388a658da30c6ab53db1"
 
 [[projects]]
   branch = "master"
+  digest = "1:99651e95333755cbe5c9768c1b80031300acca64a80870b40309202b32585a5a"
   name = "github.com/mitchellh/go-homedir"
   packages = ["."]
+  pruneopts = ""
   revision = "3864e76763d94a6df2f9960b16a20a33da9f9a66"
 
 [[projects]]
   branch = "master"
+  digest = "1:eb9117392ee8e7aa44f78e0db603f70b1050ee0ebda4bd40040befb5b218c546"
   name = "github.com/mitchellh/mapstructure"
   packages = ["."]
+  pruneopts = ""
   revision = "bb74f1db0675b241733089d5a1faa5dd8b0ef57b"
 
 [[projects]]
+  digest = "1:894aef961c056b6d85d12bac890bf60c44e99b46292888bfa66caf529f804457"
   name = "github.com/pelletier/go-toml"
   packages = ["."]
+  pruneopts = ""
   revision = "c01d1270ff3e442a8a57cddc1c92dc1138598194"
   version = "v1.2.0"
 
 [[projects]]
+  digest = "1:7f569d906bdd20d906b606415b7d794f798f91a62fcfb6a4daa6d50690fb7a3f"
   name = "github.com/satori/go.uuid"
   packages = ["."]
+  pruneopts = ""
   revision = "f58768cc1a7a7e77a3bd49e98cdd21419399b6a3"
   version = "v1.2.0"
 
 [[projects]]
+  digest = "1:69240630f5a4a6f16a7d6111884e206b0c5b0a233c9ee5fe54956f06c2fd6ac0"
   name = "github.com/shopspring/decimal"
   packages = ["."]
+  pruneopts = ""
   revision = "69b3a8ad1f5f2c8bd855cb6506d18593064a346b"
   version = "1.0.1"
 
 [[projects]]
+  digest = "1:7ba2551c9a8de293bc575dbe2c0d862c52252d26f267f784547f059f512471c8"
   name = "github.com/spf13/afero"
   packages = [
     ".",
-    "mem"
+    "mem",
   ]
+  pruneopts = ""
   revision = "787d034dfe70e44075ccc060d346146ef53270ad"
   version = "v1.1.1"
 
 [[projects]]
+  digest = "1:d0b38ba6da419a6d4380700218eeec8623841d44a856bb57369c172fbf692ab4"
   name = "github.com/spf13/cast"
   packages = ["."]
+  pruneopts = ""
   revision = "8965335b8c7107321228e3e3702cab9832751bac"
   version = "v1.2.0"
 
 [[projects]]
+  digest = "1:a1403cc8a94b8d7956ee5e9694badef0e7b051af289caad1cf668331e3ffa4f6"
   name = "github.com/spf13/cobra"
   packages = ["."]
+  pruneopts = ""
   revision = "ef82de70bb3f60c65fb8eebacbb2d122ef517385"
   version = "v0.0.3"
 
 [[projects]]
   branch = "master"
+  digest = "1:104517520aab91164020ab6524a5d6b7cafc641b2e42ac6236f6ac1deac4f66a"
   name = "github.com/spf13/jwalterweatherman"
   packages = ["."]
+  pruneopts = ""
   revision = "7c0cea34c8ece3fbeb2b27ab9b59511d360fb394"
 
 [[projects]]
+  digest = "1:8e243c568f36b09031ec18dff5f7d2769dcf5ca4d624ea511c8e3197dc3d352d"
   name = "github.com/spf13/pflag"
   packages = ["."]
+  pruneopts = ""
   revision = "583c0c0531f06d5278b7d917446061adc344b5cd"
   version = "v1.0.1"
 
 [[projects]]
+  digest = "1:3dab237cd3263a290d771d133fed777bb56c22e380b00ebe92e6531d5c8d3d0c"
   name = "github.com/spf13/viper"
   packages = ["."]
+  pruneopts = ""
   revision = "b5e8006cbee93ec955a89ab31e0e3ce3204f3736"
   version = "v1.0.2"
 
 [[projects]]
   branch = "master"
+  digest = "1:6ef14be530be39b6b9d75d54ce1d546ae9231e652d9e3eef198cbb19ce8ed3e7"
   name = "golang.org/x/crypto"
   packages = [
     "pkcs12",
-    "pkcs12/internal/rc2"
+    "pkcs12/internal/rc2",
   ]
+  pruneopts = ""
   revision = "a49355c7e3f8fe157a85be2f77e6e269a0f89602"
 
 [[projects]]
   branch = "master"
+  digest = "1:274e6fab68b7f298bf3f70bd60d4ba0c55284d1d2034175fb3324924268ccd9e"
   name = "golang.org/x/sys"
   packages = ["unix"]
+  pruneopts = ""
   revision = "7138fd3d9dc8335c567ca206f4333fb75eb05d56"
 
 [[projects]]
+  digest = "1:5acd3512b047305d49e8763eef7ba423901e85d5dd2fd1e71778a0ea8de10bd4"
   name = "golang.org/x/text"
   packages = [
     "internal/gen",
@@ -211,36 +268,66 @@
     "internal/ucd",
     "transform",
     "unicode/cldr",
-    "unicode/norm"
+    "unicode/norm",
   ]
+  pruneopts = ""
   revision = "f21a4dfb5e38f5895301dc265a8def02365cc3d0"
   version = "v0.3.0"
 
 [[projects]]
   branch = "master"
+  digest = "1:db48136d45b85e42f1a0bea666e848caf2b2bc0b8d9e521a8af04e6484b16f31"
   name = "golang.org/x/tools"
   packages = [
     "go/ast/astutil",
     "imports",
-    "internal/fastwalk"
+    "internal/fastwalk",
   ]
+  pruneopts = ""
   revision = "ffe88906718454e356e61776b54256e873fc133b"
 
 [[projects]]
   branch = "v1"
+  digest = "1:1d01f96bc2293b56c3dec797b8f976d7613fb30ce92bfbc994130404f7f7f031"
   name = "gopkg.in/check.v1"
   packages = ["."]
+  pruneopts = ""
   revision = "788fd78401277ebd861206a03c884797c6ec5541"
 
 [[projects]]
+  digest = "1:f0620375dd1f6251d9973b5f2596228cc8042e887cd7f827e4220bc1ce8c30e2"
   name = "gopkg.in/yaml.v2"
   packages = ["."]
+  pruneopts = ""
   revision = "5420a8b6744d3b0345ab293f6fcba19c978f1183"
   version = "v2.2.1"
 
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "f4bfed9d1dcc4af2e0ff5811bb14dfebe84f87e7aed10199b8ff8d867d947612"
+  input-imports = [
+    "github.com/Azure/go-autorest/autorest",
+    "github.com/Azure/go-autorest/autorest/adal",
+    "github.com/Azure/go-autorest/autorest/azure",
+    "github.com/Azure/go-autorest/autorest/azure/auth",
+    "github.com/Azure/go-autorest/autorest/date",
+    "github.com/Azure/go-autorest/autorest/to",
+    "github.com/Azure/go-autorest/autorest/validation",
+    "github.com/dnaeon/go-vcr/cassette",
+    "github.com/dnaeon/go-vcr/recorder",
+    "github.com/globalsign/mgo",
+    "github.com/marstr/collection",
+    "github.com/marstr/goalias/model",
+    "github.com/marstr/guid",
+    "github.com/marstr/randname",
+    "github.com/mitchellh/go-homedir",
+    "github.com/satori/go.uuid",
+    "github.com/shopspring/decimal",
+    "github.com/spf13/cobra",
+    "github.com/spf13/viper",
+    "golang.org/x/crypto/pkcs12",
+    "golang.org/x/tools/imports",
+    "gopkg.in/check.v1",
+  ]
   solver-name = "gps-cdcl"
   solver-version = 1
diff --git a/services/preview/apimanagement/mgmt/2018-06-01-preview/apimanagement/models.go b/services/preview/apimanagement/mgmt/2018-06-01-preview/apimanagement/models.go
index 1560de69becf..4b5092fdc1d9 100644
--- a/services/preview/apimanagement/mgmt/2018-06-01-preview/apimanagement/models.go
+++ b/services/preview/apimanagement/mgmt/2018-06-01-preview/apimanagement/models.go
@@ -3623,7 +3623,7 @@ type GroupContractProperties struct {
 	BuiltIn *bool `json:"builtIn,omitempty"`
 	// Type - Group type. Possible values include: 'Custom', 'System', 'External'
 	Type GroupType `json:"type,omitempty"`
-	// ExternalID - For external groups, this property contains the id of the group from the external identity provider, e.g. for Azure Active Directory aad://<tenant>.onmicrosoft.com/groups/<group object id>; otherwise the value is null.
+	// ExternalID - For external groups, this property contains the id of the group from the external identity provider, e.g. for Azure Active Directory `aad://<tenant>.onmicrosoft.com/groups/<group object id>`; otherwise the value is null.
 	ExternalID *string `json:"externalId,omitempty"`
 }
 
@@ -3674,7 +3674,7 @@ type GroupCreateParametersProperties struct {
 	Description *string `json:"description,omitempty"`
 	// Type - Group type. Possible values include: 'Custom', 'System', 'External'
 	Type GroupType `json:"type,omitempty"`
-	// ExternalID - Identifier of the external groups, this property contains the id of the group from the external identity provider, e.g. for Azure Active Directory aad://<tenant>.onmicrosoft.com/groups/<group object id>; otherwise the value is null.
+	// ExternalID - Identifier of the external groups, this property contains the id of the group from the external identity provider, e.g. for Azure Active Directory `aad://<tenant>.onmicrosoft.com/groups/<group object id>`; otherwise the value is null.
 	ExternalID *string `json:"externalId,omitempty"`
 }
 
@@ -3725,7 +3725,7 @@ type GroupUpdateParametersProperties struct {
 	Description *string `json:"description,omitempty"`
 	// Type - Group type. Possible values include: 'Custom', 'System', 'External'
 	Type GroupType `json:"type,omitempty"`
-	// ExternalID - Identifier of the external groups, this property contains the id of the group from the external identity provider, e.g. for Azure Active Directory aad://<tenant>.onmicrosoft.com/groups/<group object id>; otherwise the value is null.
+	// ExternalID - Identifier of the external groups, this property contains the id of the group from the external identity provider, e.g. for Azure Active Directory `aad://<tenant>.onmicrosoft.com/groups/<group object id>`; otherwise the value is null.
 	ExternalID *string `json:"externalId,omitempty"`
 }