restful uri conflicts with existing wildcard

Here's sample code:
```
func RegisterDemoRoute(r *Engine) {
	v1 := r.Group("api/v1/sys")
	{
		v1.GET("users/:id", service.GetSysUser)
		// conflicts with existing wildcard for "v1.GET("users/:id", service.GetSysUser)"
		v1.GET("users/:id/roles", service.GetSysUserRolePageList)
	}
}
```
"users/:id" and "users/roles" are conflicts,but Java web can do this,What should I do under gin?