+ *
+ * <pre>
+ *
+ * Example:
+ *
+ * Request URL:
+ * http://localhost:8080/controller/nb/v2/topology/default
+ *
+ * Response body in XML:
+ * <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+ * <topology>
+ * <edgeProperties>
+ * <edge>
+ * <tailNodeConnector>
+ * <node>
+ * <id>00:00:00:00:00:00:00:02</id>
+ * <type>OF</type>
+ * </node>
+ * <id>2</id>
+ * <type>OF</type>
+ * </tailNodeConnector>
+ * <headNodeConnector>
+ * <node>
+ * <id>00:00:00:00:00:00:00:51</id>
+ * <type>OF</type>
+ * </node>
+ * <id>2</id>
+ * <type>OF</type>
+ * </headNodeConnector>
+ * </edge>
+ * <properties>
+ * <state>
+ * <value>1</value>
+ * </state>
+ * <config>
+ * <value>1</value>
+ * </config>
+ * <name>
+ * <value>C1_2-L2_2</value>
+ * </name>
+ * <timeStamp>
+ * <value>1377279422032</value>
+ * <name>creation</name>
+ * </timeStamp>
+ * </properties>
+ * </edgeProperties>
+ * <edgeProperties>
+ * <edge>
+ * <tailNodeConnector>
+ * <node>
+ * <id>00:00:00:00:00:00:00:51</id>
+ * <type>OF</type>
+ * </node>
+ * <id>2</id>
+ * <type>OF</type>
+ * </tailNodeConnector>
+ * <headNodeConnector>
+ * <node>
+ * <id>00:00:00:00:00:00:00:02</id>
+ * <type>OF</type>
+ * </node>
+ * <id>2</id>
+ * <type>OF</type>
+ * </headNodeConnector>
+ * </edge>
+ * <properties>
+ * <state>
+ * <value>1</value>
+ * </state>
+ * <name>
+ * <value>L2_2-C1_2</value>
+ * </name>
+ * <config>
+ * <value>1</value>
+ * </config>
+ * <timeStamp>
+ * <value>1377279423564</value>
+ * <name>creation</name>
+ * </timeStamp>
+ * </properties>
+ * </edgeProperties>
+ * </topology>
+ *
+ * Response body in JSON:
+ * {
+ * "edgeProperties":[
+ * {
+ * "edge":{
+ * "tailNodeConnector":{
+ * "node":{
+ * "id":"00:00:00:00:00:00:00:02",
+ * "type":"OF"
+ * },
+ * "id":"2",
+ * "type":"OF"
+ * },
+ * "headNodeConnector":{
+ * "node":{
+ * "id":"00:00:00:00:00:00:00:51",
+ * "type":"OF"
+ * },
+ * "id":"2",
+ * "type":"OF"
+ * }
+ * },
+ * "properties":{
+ * "timeStamp": {
+ * "value": 1379527162648,
+ * "name": "creation",
+ * },
+ * "name": {
+ * "value": "s2-eth3"
+ * },
+ * "state": {
+ * "value": 1
+ * },
+ * "config": {
+ * "value": 1
+ * },
+ * "bandwidth": {
+ * "value": 10000000000
+ * }
+ * }
+ * },
+ * {
+ * "edge":{
+ * "tailNodeConnector":{
+ * "node":{
+ * "id":"00:00:00:00:00:00:00:51",
+ * "type":"OF"
+ * },
+ * "id":"2",
+ * "type":"OF"
+ * },
+ * "headNodeConnector":{
+ * "node":{
+ * "id":"00:00:00:00:00:00:00:02",
+ * "type":"OF"
+ * },
+ * "id":"2",
+ * "type":"OF"
+ * }
+ * },
+ * "properties":{
+ * "timeStamp": {
+ * "value": 1379527162648,
+ * "name": "creation",
+ * }
+ * }
+ * }
+ * ]
+ * }
+ * </pre>