diff --git a/test/tosca/link.yaml b/test/tosca/link.yaml
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+
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+tosca_definitions_version: tosca_simple_yaml_1_0
+
+description: Persist xos-sample-gui-extension
+
+imports:
+  - custom_types/slice.yaml
+  - custom_types/network.yaml
+  - custom_types/networkslice.yaml
+  - custom_types/networktemplate.yaml
+  - custom_types/site.yaml
+  - custom_types/image.yaml
+  - custom_types/service.yaml
+  - custom_types/serviceinstance.yaml
+  - custom_types/serviceinstancelink.yaml
+
+topology_template:
+  node_templates:
+
+    service#mcord:
+      type: tosca.nodes.Service
+      properties:
+        name: mcord
+
+    test1:
+      type: tosca.nodes.ServiceInstance
+      properties:
+        name: test1
+
+    test2:
+      type: tosca.nodes.ServiceInstance
+      properties:
+        name: test2
+
+    link1:
+      type: tosca.nodes.ServiceInstanceLink
+      requirements:
+        - provider_service_instance:
+            node: test1
+            relationship: tosca.relationships.BelongsToOne
+        - subscriber_service_instance:
+            node: test2
+            relationship: tosca.relationships.BelongsToOne
+
+    link2:
+      type: tosca.nodes.ServiceInstanceLink
+      requirements:
+        - subscriber_service:
+            node: service#mcord
+            relationship: tosca.relationships.BelongsToOne
+        - provider_service_instance:
+            node: test2
+            relationship: tosca.relationships.BelongsToOne
+
+    # Site
+    mysite:
+      type: tosca.nodes.Site
+      properties:
+        must-exist: true
+        name: mysite
+
+    # Images
+    image#trusty-server-multi-nic:
+      type: tosca.nodes.Image
+      properties:
+        must-exist: true
+        name: trusty-server-multi-nic
+
+    # slices
+    slice#slice1:
+      type: tosca.nodes.Slice
+      properties:
+        name: mysite_slice1
+      requirements:
+        - site:
+            node: mysite
+            relationship: tosca.relationships.BelongsToOne
+        - default_image:
+            node: image#trusty-server-multi-nic
+            relationship: tosca.relationships.BelongsToOne
+
+    slice#slice2:
+      type: tosca.nodes.Slice
+      properties:
+        name: mysite_slice2
+      requirements:
+        - site:
+            node: mysite
+            relationship: tosca.relationships.BelongsToOne
+        - default_image:
+            node: image#trusty-server-multi-nic
+            relationship: tosca.relationships.BelongsToOne
+
+    # networks
+
+    shared_template:
+      type: tosca.nodes.NetworkTemplate
+      properties:
+        must-exist: true
+        name: shared_template
+
+    network#network1:
+      type: tosca.nodes.Network
+      properties:
+        name: network1
+      requirements:
+        - template:
+            node: shared_template
+            relationship: tosca.relationships.BelongsToOne
+        - owner:
+            node: slice#slice1
+            relationship: tosca.relationships.BelongsToOne
+
+    network#network2:
+      type: tosca.nodes.Network
+      properties:
+        name: network2
+      requirements:
+        - template:
+            node: shared_template
+            relationship: tosca.relationships.BelongsToOne
+        - owner:
+            node: slice#slice2
+            relationship: tosca.relationships.BelongsToOne
+
+    networkslice#slice1_network2:
+      type: tosca.nodes.NetworkSlice
+      requirements:
+        - network:
+            node: network#network2
+            relationship: tosca.relationships.BelongsToOne
+        - slice:
+            node: slice#slice1
+            relationship: tosca.relationships.BelongsToOne
+
+    networkslice#slice2_network1:
+      type: tosca.nodes.NetworkSlice
+      requirements:
+        - network:
+            node: network#network1
+            relationship: tosca.relationships.BelongsToOne
+        - slice:
+            node: slice#slice2
+            relationship: tosca.relationships.BelongsToOne
+