/**
 * An endpoint class we are exposing
 */
@Api(
  name = "myApi",
  version = "v2",
  namespace = @ApiNamespace(
    ownerDomain = "awesome.me.com",
    ownerName = "awesome.me.com",
    packagePath = "api/v2"
  )
)
public class MyEndpointV2 extends MyEndpoint{


  @ApiMethod(name = "getContact")
  public Charges getContact(ContactRequest request){
    return ContactHandler.getContact(request);
  }
}

myapi.getContact()

@Api(
      name = "myApi",
      version = "v1",
      namespace = @ApiNamespace(
        ownerDomain = "awesome.me.com",
        ownerName = "awesome.me.com",
        packagePath = ""
      )
    )
    public class MyEndpoint{


     @ApiMethod(name = "getPeriod")
  public Period getPeriod(@Named("days")long days) {
    return Handler.getPeriod(days);
  }
  //other api methods
    }