[ONOS-7732] Automating switch workflow - program counter refactoring

Change-Id: Ic5271121dad45222ded24ea41dbb2f5efba1ff2e
diff --git a/apps/workflow/api/src/main/java/org/onosproject/workflow/api/Workflow.java b/apps/workflow/api/src/main/java/org/onosproject/workflow/api/Workflow.java
index 848a706..1404f9b 100644
--- a/apps/workflow/api/src/main/java/org/onosproject/workflow/api/Workflow.java
+++ b/apps/workflow/api/src/main/java/org/onosproject/workflow/api/Workflow.java
@@ -56,6 +56,14 @@
 
     /**
      * Returns instance of worklet.
+     * @param pc program counter
+     * @return instance of worklet
+     * @throws WorkflowException workflow exception
+     */
+    Worklet getWorkletInstance(ProgramCounter pc) throws WorkflowException;
+
+    /**
+     * Returns instance of worklet.
      * @param workletType class name of worklet
      * @return instance of worklet
      * @throws WorkflowException workflow exception