class MyClass 
{   
    double MyFun(Single i) as IMyInterface.MyFun  
    {      
       // Some code   
    } 
}

 class MyClass 
 {  
     MyFun (Single i) As Double 
     {    
        // Some code   
     } 
  }

 class MyClass: implements IMyInterface
 {   
     double fun(Single si) implements IMyInterface.MyFun()  
     {      
        //Some code     
      } 
  }

 class MyClass: IMyInterface
 {  
     double IMyInterface.MyFun(Single i)   
     {     
         // Some code    
     } 
  }

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