Rename #getNumber -> #getPortNumber

- Part of ONOS-1564

Change-Id: I3c082c384564920c7b5baa8ba74a1cb534f64f6d
diff --git a/src/main/java/net/onrc/onos/core/util/SwitchPort.java b/src/main/java/net/onrc/onos/core/util/SwitchPort.java
index c2079a0..b9e1964 100644
--- a/src/main/java/net/onrc/onos/core/util/SwitchPort.java
+++ b/src/main/java/net/onrc/onos/core/util/SwitchPort.java
@@ -82,11 +82,11 @@
     }
 
     /**
-     * Get the port value of the Switch-Port.
+     * Get the port number of the Switch-Port.
      *
-     * @return the port value of the Switch-Port.
+     * @return the port number of the Switch-Port.
      */
-    public PortNumber getNumber() {
+    public PortNumber getPortNumber() {
         return port;
     }