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how can i add parameter annotations to the parameters of a method?

Assume the scenario

public class A(){
       public int sum(int a,int b){
              return a+b; 
              } 
       public int totalsum(int a,int b,int c){ 
              return a+b+c; 
              } 
       } 

now the name of this class is passed to the method which will dynamically generate a new well annotated class, say dynamic(String className). The new class should appear as:

@Start
 public class newA(){
                    @MethodStart 
                    public int sum(
                                   @Param1(value="1st Parameter") 
                                   int a, 
                                   @Param2(value="2nd Parameter") 
                                   int b 
                                   ){ 
                         return a+b; 
                         } 
                      public int totalsum(
                                          @Param1(value="1st Parameter") 
                                          int a, 
                                          @Param2(value="2nd Parameter") 
                                          int b,
                                          @Param3(value="3rd Parameter") 
                                          int c 
                                          ){
                              return a+b+c; 
                              } 

adding annotation to the start of the methods and class is simple but the trickiest part is adding parameter annotations to the variable no of parameters. i found few users on net discussing a solution to this problem but it didn't seems to be working.