Clean up source code of REST API

- Add missing @Produces annotation
- Correct comments
- Restrict variable access level

Change-Id: I7f75650b83651248370e7781b1e8aec7eac2314c
diff --git a/web/api/src/main/java/org/onosproject/rest/resources/TopologyWebResource.java b/web/api/src/main/java/org/onosproject/rest/resources/TopologyWebResource.java
index 2675fbe..c01d94f 100644
--- a/web/api/src/main/java/org/onosproject/rest/resources/TopologyWebResource.java
+++ b/web/api/src/main/java/org/onosproject/rest/resources/TopologyWebResource.java
@@ -44,12 +44,12 @@
 @Path("topology")
 public class TopologyWebResource extends AbstractWebResource {
 
-    public static final String CLUSTER_NOT_FOUND = "Cluster is not found";
+    private static final String CLUSTER_NOT_FOUND = "Cluster is not found";
 
     /**
-     * Get overview of current topology.
+     * Gets overview of current topology.
      *
-     * @return topology overview
+     * @return 200 OK with topology overview
      * @onos.rsModel Topology
      */
     @GET
@@ -61,9 +61,9 @@
     }
 
     /**
-     * Get overview of topology SCCs.
+     * Gets overview of topology SCCs.
      *
-     * @return topology clusters overview
+     * @return 200 OK with topology clusters overview
      * @onos.rsModel TopologyClusters
      */
     @GET
@@ -78,10 +78,10 @@
     }
 
     /**
-     * Get details of a specific SCC.
+     * Gets details of a specific SCC.
      *
      * @param clusterId id of the cluster to query
-     * @return topology cluster details
+     * @return 200 OK with topology cluster details
      * @onos.rsModel TopologyCluster
      */
     @GET
@@ -102,10 +102,10 @@
     }
 
     /**
-     * Get devices in a specific SCC.
+     * Gets devices in a specific SCC.
      *
      * @param clusterId id of the cluster to query
-     * @return topology cluster devices
+     * @return 200 OK with topology cluster devices
      * @onos.rsModel TopologyClustersDevices
      */
     @GET
@@ -126,10 +126,10 @@
     }
 
     /**
-     * Get links in specific SCC.
+     * Gets links in specific SCC.
      *
      * @param clusterId id of the cluster to query
-     * @return topology cluster links
+     * @return 200 OK with topology cluster links
      * @onos.rsModel LinksGet
      */
     @GET
@@ -175,11 +175,11 @@
     }
 
     /**
-     * Test if a connect point is in broadcast set.
+     * Tests if a connect point is in broadcast set.
      *
      * @param connectPointString deviceid:portnumber
-     * @return JSON representation of true if the connect point is broadcast,
-     * false otherwise
+     * @return 200 OK with JSON representation of true if the connect point is
+     * broadcast, false otherwise
      * @onos.rsModel TopologyBroadcast
      */
     @GET
@@ -193,17 +193,16 @@
         ConnectPoint connectPoint = new ConnectPoint(deviceId, portNumber);
         boolean isBroadcast = get(TopologyService.class).isBroadcastPoint(topology, connectPoint);
 
-        return ok(mapper()
-                          .createObjectNode()
+        return ok(mapper().createObjectNode()
                           .put("broadcast", isBroadcast))
                 .build();
     }
 
     /**
-     * Test if a connect point is infrastructure or edge.
+     * Tests if a connect point is infrastructure or edge.
      *
      * @param connectPointString deviceid:portnumber
-     * @return JSON representation of true if the connect point is broadcast,
+     * @return 200 OK with JSON representation of true if the connect point is broadcast,
      * false otherwise
      * @onos.rsModel TopologyInfrastructure
      */
@@ -218,10 +217,8 @@
         ConnectPoint connectPoint = new ConnectPoint(deviceId, portNumber);
         boolean isInfrastructure = get(TopologyService.class).isInfrastructure(topology, connectPoint);
 
-        return ok(mapper()
-                          .createObjectNode()
+        return ok(mapper().createObjectNode()
                           .put("infrastructure", isInfrastructure))
                 .build();
     }
-
 }