API versioning in golang ECHO

package main import ( "net/http" "github.com/labstack/echo" ) func main() { e := echo.New() v1 := e.Group("/v1") groupV1Routes(v1) v2 := e.Group("/v2") groupv2Routes(v2) e.Logger.Fatal(e.Start(":8090")) } func groupV1Routes(e *echo.Group) { grA := e.Group("/groupa") grA.GET("/event", handlerGet1) grB := e.Group("/groupb") grB.PATCH("/:id", handlerPost) } func groupv2Routes(e *echo.Group) { grA := e.Group("/groupa") grA.GET("/event", handlerGet2) } func handlerGet1(c echo.Context) error { return c.String(http.StatusOK, "THIS IS VERSION 1!") } func handlerGet2(c echo.Context) error { return c.String(http.StatusOK, "THIS IS VERSION TWO") } func handlerPost(c echo.Context) error { return c.String(http.StatusOK, c.Param("id")) }